Table of Contents

Component Description

The objective of the dietary interview component is to obtain detailed dietary intake information from NHANES participants. The dietary intake data are used to estimate the types and amounts of foods and beverages consumed during the 24-hour period prior to the interview (midnight to midnight), and to estimate intakes of energy, nutrients, and other food components from those foods and beverages. Beginning in 2005-2006, water drunk throughout the day is collected as part of the 24-hour dietary recall (see more details in the “What’s New with the 2005-2006 WWEIA Release” section). Following the dietary recall, participants are asked questions on salt use, whether the person’s intake on the previous day was usual or unusual, and whether the respondent is on any type of special diet. Survey participants 1 year or older were asked questions on frequency of fish and shellfish consumed during the past 30 days.

The dietary interview component, called What We Eat in America (WWEIA), is conducted as a partnership between the U.S. Department of Agriculture (USDA) and the U.S. Department of Health and Human Services (DHHS). Under this partnership, DHHS’ National Center for Health Statistics (NCHS) is responsible for the sample design and data collection and USDA’s Food Surveys Research Group (FSRG) is responsible for the dietary data collection methodology, maintenance of the databases used to code and process the data, and data review and processing.

All NHANES examinees are eligible for two 24-hour dietary recall interviews. The first dietary recall interview is collected in-person in the Mobile Examination Center (MEC) and the second interview is collected by telephone 3 to 10 days later.

As in previous years, two types of dietary intake data are available for the 2005-2006 survey cycle - Individual Foods files and Total Nutrient Intakes files. Each of these dietary intake data files is accompanied by a PDF file containing its documentation, codebook, and frequencies. The structure of the PDF file for the 2005-2006 dietary intake data files has been modified slightly from earlier survey years so that the documentation section of the file for each of the two types of dietary intake data files is identical.

What’s New with the 2005-2006 WWEIA Release: One of the major changes to this release is that beginning with the 2005-2006 WWEIA, the consumption of all types of water (including tap and bottled water, plain and carbonated, sweetened and unsweetened water) was collected during the 24-hour recall. As a result, each report of water intake throughout the day was collected and coded as a separate food item. These water intake items now appear in the Individual Foods file with food codes designating the type of water. As with other foods, a variable is present to indicate if the water was consumed at home or away. For bottled waters, a variable is present indicating where the water was obtained. For tap water, the variables DR1TWS and DR2TWS in the Total Nutrient Intake files indicate the main source of tap water drunk by the participant. In 2003-2004, only sweetened bottled waters were collected during the 24-hour recall and included in the Individual Foods file. Information on daily intake of non-sweetened waters (total plain water, total tap water and the source of tap water, total bottled water, and plain carbonated water) were collected after the 24-hour dietary recall and included in the Total Nutrient Intake file for 2003-2004. In 2005-2006, summary water variables that are compatible with previous data cycles are included in the Total Nutrient Intake files with the exception of plain carbonated water. These water totals (DR1_320Z, DR2_320Z, DR1_330Z, DR2_330Z, DR1BWATZ and DR2BWATZ) represent total water consumed as a beverage by itself. Therefore, they do not include the moisture content of foods and beverages (such as watermelon, coffee, lettuce) that are available for each food reported in the Individual Foods files.

The table in Appendix 1 summarizes additional changes among the 3 latest cycles of data collection.

Dietary Interview Data Files: Four data files were produced from the information collected in the dietary interview: two Individual Foods files and two Total Nutrient Intake files. Each file includes one day of intake data. The number “1” or “2” in the file name identifies the day (and mode) of the interview: 1 = first day (in-person), 2 = second day (phone). File names are the following:

File Names for Dietary Interview Data
File Day 1 Day 2
Individual Foods File DRIFF_D DR2IFF_D
TotalNutrient Intakes File DR1TOT_D DR2TOT_D

The nutrient amounts in these files reflect only nutrients obtained from foods, beverages, and water including tap and bottled water. They do not include nutrients obtained from dietary supplements, antacids, or medications.

Individual Foods Files (DR1IFF_D and DR2IFF_D): Detailed information about the types and amounts of individual foods reported by each participant, as well as amounts of nutrients from each food are included in the Individual Foods files. The names for both Day 1 and Day 2 variables are listed in Appendix 2.

Two supporting files are also included with the Individual Foods files: the Food Code Description file (DRXFCD_D) and the Modification Code Description file (DRXMCD_D). The DRXFCD_D file includes abbreviated descriptions (up to 60 characters) and complete descriptions (up to 200 characters) associated with each USDA food code identified in the Individual Foods files. The DRXMCD_D file includes descriptions (up to 200 characters) associated with each modification code identified in the Individual Foods files. Modification codes represent adjustments to predefined recipe ingredients that reflect more closely the food as described by the respondent. Appendix 3 provides SAS code examples that may be used to link the food code or the modification code description to the Individual Foods file.

The Individual Foods files include, for each interview day, one record for each food consumed by a survey participant. Each food record is sequentially numbered and contains the information listed below:

  • Number of days of complete intake obtained from participant
  • Day of the week of the intake
  • Time of eating occasion when the food was eaten
  • Eating occasion name
  • Food, water, or beverage identified by a USDA food code
  • Amount of food, water, and beverages consumed, in grams
  • Whether the food was eaten in combination with other foods, such as in a sandwich
  • Whether the food was eaten at home or not
  • Where the food was obtained
  • Amounts of energy and 63 nutrients/food components (listed in Appendix 4) from each food, as calculated using USDA's Food and Nutrient Database for Dietary Studies, 3.0 (FNDDS 3.0)
  • Whether nutrients were calculated directly from the food as identified in FNDDS 3.0 or the FNDDS item was modified by adjusting recipe ingredients

Total Nutrient Intakes Files (DR1TOT_D and DR2TOT_D): For each participant, daily total energy and nutrient intakes from foods and beverages and whether the amount of food consumed was usual, much more than usual, or much less than usual are included in the Total Nutrient Intakes files. The Day 1 file also includes information on salt use in cooking and at the table; whether the participant is currently on any kind of diet to lose weight or for other health-related reason and, if so, the type of diet; and for participants 1 year or older, information on frequency of fish and shellfish consumption. The names for both Day 1 and Day 2 variables are listed in Appendix 5.

The Total Nutrient Intakes files provide a summary record of total nutrient intakes for each individual. Each total intake record contains the following information:

  • Number of days of complete intake obtained from participant
  • Day of the week of the intake
  • Daily aggregates of food energy and 63 nutrients/food components (listed in Appendix 4) from all foods, as calculated using USDA’s Food and Nutrient Database for Dietary Studies 3.0 (FNDDS 3.0)
  • The daily aggregates of water (moisture), DR1TMOIS and DR2TMOIS, consist of all moisture present in foods and beverages, including tap and bottled waters consumed as beverages
  • Total amount of water consumed (plain water, tap water and the source of tap water, and bottled water
  • Total number of foods reported for that participant for that day’s intake
  • Whether the amount of food consumed was usual, much more than usual, or much less than usual
  • Type of salt used and how often added at the table and in food preparation (Day 1 file only)
  • Whether the participant is currently on any kind of diet to lose weight or for other health-related reason and, if so, the type of diet (Day 1 file only)
  • Frequency of fish and shellfish consumption in the past 30 days (examinees one year or older, Day 1 file only)

Eligible Sample

All NHANES examinees are eligible for the dietary interview component. However, only examinees one year or older are eligible for the frequency of fish and shellfish consumption questions following the 24-hour recall.

Protocol and Procedure

The examination protocol and data collection methods are fully documented in the NHANES dietary interviewers procedures manuals (Centers for Disease Control and Prevention, National Health and Nutrition Examination Survey MEC In-Person Dietary Interviewers Procedure Manual, Centers for Disease Control and Prevention, National Health and Nutrition Examination Survey Phone Follow-Up Dietary Interviewer Procedure Manual).

Interviews were conducted for survey participants less than six years of age with a proxy who was generally the person most knowledgeable about the survey participant’s intake. With children ages 6 to 11, the interviews were conducted with the child and the assistance of an adult familiar with the child’s intake. Dietary interviews were conducted in English and Spanish. Translators were used to conduct interviews in other languages.

The in-person interview was conducted in a private room in the NHANES mobile examination center (MEC). A set of measuring guides (various glasses, bowls, mugs, drink boxes and bottles, household spoons, measuring cups and spoons, a ruler, thickness sticks, bean bags, and circles) was available in the MEC dietary interview room for the participant to use for reporting amounts of foods (Centers for Disease Control and Prevention, National Health and Nutrition Examination Survey Measuring Guides for the Dietary Recall Interview). Upon completion of the in-person interview, participants were given measuring cups, spoons, a ruler, and a food model booklet, which contained two-dimensional drawings of the various measuring guides available in the MEC, to use for reporting food amounts during the telephone interview. Telephone dietary interviews were collected 3 to 10 days following the MEC dietary interview but not on the same day of the week as the MEC interview. Any participant who did not have a telephone was given a toll-free number to call so that the recall could be conducted.

What We Eat in America data were collected using USDA’s dietary data collection instrument, the Automated Multiple Pass Method (AMPM) (Agricultural Research Service, USDA Automated Multiple-Pass Method for Dietary Recalls). The AMPM was designed to provide an efficient and accurate means of collecting intakes for large-scale national surveys. The AMPM is a fully computerized recall method that uses a 5-step interview outlined below:

  1. Quick List - Participant recalls all foods and beverages consumed the day before the interview (midnight to midnight).
  2. Forgotten Foods - Participant is asked about consumption of foods commonly forgotten during the Quick List step.
  3. Time and Occasion - Time and eating occasion are collected for each food.
  4. Detail Cycle - For each food, a detailed description, amount eaten, and additions to the food are collected. Eating occasions and times between eating occasions are reviewed to elicit forgotten foods.
  5. Final Probe - Additional foods not remembered earlier are collected.

The AMPM includes an extensive compilation of standardized food-specific questions and possible response options. Routing of questions is based on previous responses. The AMPM is updated yearly to reflect the changing food supply and to address research needs from the data user community. Additional information about the AMPM is provided in Raper et al. (Raper, 2004).

FSRG conducted the AMPM Validation Study to evaluate the accuracy of this dietary intake method. Completed in 2004, this extensive research project included 524 healthy, weight-stable volunteers, aged 30-69 years. The accuracy of the AMPM was evaluated by comparing reported energy intake (EI) to total energy expenditure (TEE) using the doubly labeled water technique (Moshfegh). Among the findings were that EI compared to TEE was under-reported by 11% overall and by less than 3% for normal weight subjects with body mass index (BMI) <25.

Other studies have also reported on the validity of the AMPM to measure group energy intake (EI). Blanton reported that EI was not significantly different from TEE for a sample of 20 adult females (Blanton, 2006). Rumpler and colleagues found that mean EIs were accurately reported for a sample of 12 adult males (Rumpler, 2008).

For additional information about the dietary interview component and related survey protocols, please go to the Survey Operations Manual, Consent Documents, Brochures site at:
https://wwwn.cdc.gov/nchs/nhanes/continuousnhanes/default.aspx?BeginYear=2005.

Quality Assurance & Quality Control

All dietary interviewers were required to complete an intensive one-week training course and to conduct supervised practice interviews before working independently in the field. Retraining sessions were conducted annually to reinforce the proper protocols and technique.

Interviewers were monitored throughout the data collection period. Monitoring consisted of the following:

  • Data transmittal sheets were reviewed to verify receipt of data files.
  • Reviews of audio-taped interviews or in-person observations were conducted for approximately 5% of each interviewer's work.
  • Interviews were checked for completeness of the recalls, missing information, inconsistent reports, and unclear notes. Written notification and feedback were provided to the interviewers.

 

Data Processing and Editing

Interview data files were sent electronically from the field and were imported into Survey Net, a computer-assisted food coding and data management system developed by USDA (Raper, 2004).

USDA's Food and Nutrient Database for Dietary Studies, 3.0 (FNDDS 3.0), was used for processing the 2005-2006 intakes. The FNDDS includes comprehensive information that can be used to code individual foods and portion sizes reported by participants and also includes nutrient values for calculating nutrient intakes. The underlying nutrient values for FNDDS 3.0 were based on values in the USDA National Nutrient Database for Standard Reference, release 20, produced by USDA’s Nutrient Data Lab (Agricultural Research Service, USDA National Nutrient Database for Standard Reference, Release 20). FNDDS values are updated for every 2-year WWEIA, NHANES release cycle. FNDDS 3.0 corresponds with WWEIA 2005-2006. Additional information about the FNDDS and related tools is available on the Food Surveys Research Group website (Raper, 2004, Agricultural Research Service, USDA Food and Nutrient Database for Dietary Studies 3.0, Anand, 2006, Bodner-Montville, 2006, Ahuja, 2008).

Coders were required to pass a certification test after the initial training. They were routinely monitored to ensure the quality and completeness of their work. Approximately 10 percent of the coder's work was randomly selected to be independently coded by another coder. Results from the two codings were compared and adjudicated, if necessary.

After intake data were coded, various types of reviews were conducted to ensure the quality of the data. An overview of quality assurance procedures conducted during the data processing stage is available in Anand, et al. (Anand, 2006). Examples of reviews include the following:

  • Overall acceptability of each recall. This review determined if the recall met the two minimum criteria listed below. A recall was considered unacceptable if it failed to meet either of these criteria:
    1. The first 4 steps of the 5-step AMPM are completed. Failure to meet this criterion occurs infrequently and is usually due to the participant stopping the interview before completion of the fourth step. This step collects the details (description and amount consumed) for each reported food.
    2. Foods consumed for each reported meal must be identified.
  • Interviewers’ and coders’ questions and comments are reviewed to ensure that they have been accounted for in coding.
  • Decisions are made about how to code new or unusual foods or food quantities reported by participants.
    Foods or portions that could not be matched to items in the database are resolved by FSRG scientists. New food items and new portion sizes are added as needed to the FNDDS. Information about new foods and package sizes are collected using internet resources, direct contact with manufacturers, or food labels. Unusual food mixtures are coded using multiple food codes to represent the mixture, linking those foods with a combination food number, and specifying the type of food mixture (such as a salad or soup).
  • Specific data integrity checks for reasonableness, consistency, and logic.
    Many quality control features are built into the AMPM software, including automated routing based on the participant's previous answers and extensive checks which prevent illogical responses. Nevertheless, over 50 unique checks are conducted across all dietary data. Examples are meals reported at unusual times (e.g., school lunch at 12:30 a.m.), foods not usually consumed by certain age groups (e.g., baby foods consumed by respondents over 2 years of age), and extremely large quantities of foods.
  • Intakes with extreme levels for individual nutrients. Nutrient intakes are reviewed separately for various age and sex groups. Unusual values are examined and corrected when necessary.

During data processing, the following edits were made to ensure the logical consistency and analytic usefulness of the data:

  • Adjusted sodium values for certain foods.

    Sodium values for home-prepared foods are based on the sodium values of recipe ingredients in the FNDDS. In some cases, the amount of salt in recipes was reduced or eliminated if the participant answered dietary interview questions about salt use in cooking or preparing foods with the response "occasionally", "rarely” or “never," respectively.

  • Modified nutrient values for some food mixtures.

    During the food coding process, predefined recipes for some food mixtures are modified to match more closely the food as described by the respondent. Nutrients are modified by substituting ingredients in a predefined recipe for the mixture. An example of a modified recipe is an egg fried in butter instead of margarine. Each modification is assigned a unique 6-digit identification number. Recipe modification numbers appear in the variable DR1MC in the DR1IFF_D file and in the variable DR2MC in the DR2IFF_D file. Descriptions for each modification are provided in a separate file called DRXMCD.

Analytic Notes

Each Individual Foods file (Day 1 and Day 2) is comprised of food records. For most survey participants, there are multiple records in each file. For each Total Nutrient Intakes file (Day 1 and Day 2) there is one record for each participant. These files can be linked with other NHANES files by the respondent sequence number (SEQN).

Variable names: For data collected on both Day 1 and Day 2, variable names are differentiated by having the number “1” or “2” in the third position of the variable name to identify the collection day. For example, the USDA food code variable (in the Individual Foods File), which identifies the food reported by the participant, is named DR1IFDCD in the Day 1 file and DR2IFDCD in the Day 2 file. Appendices 2 and 5 list the Day 1 and Day 2 variable names for the Individual Foods file and the Total Nutrient Intakes file, respectively.

Names for the following variables are the same for both days in the Individual Foods file and the Total Nutrient Intakes file:

Variables with the Same Name for Both Days in the Dietary Interview Files
Day 1 and Day 2 Variable Name Label
SEQN Respondent sequence number
WTDRD1 Dietary day one sample weight
WTDR2D Dietary two-day sample weight
DRABF Breast-fed infant (either day)
DRDINT Number of days of intake

Number of days of intake: Because two days of data are included in the 2005-2006 release, a variable has been included to indicate the number of days of intake available for each participant. The variable name is DRDINT.

Dietary recall status code: A status code (DR1DRSTZ or DR2DRSTZ) is used in both the Individual Foods and Total Nutrient Intake files to indicate the quality and completeness of a survey participant's response to the dietary recall section. The codes are the following:

1 = Reliable and met the minimum criteria
For individuals with a code 1, all relevant variables associated with the 24-hour dietary recall contain a value.

2 = Not reliable or did not meet the minimum criteria
Individuals with a code 2 have incomplete records. No data on total nutrient intakes and the total number of foods reported are provided for these cases. These individuals have no records in the Individual Foods files.

3 [Code 3 is not included in the current datasets. It was only used for data from the 1999-2000 survey cycle.]

4 = Reported consuming breast milk
For infants and children who consumed human milk, there is a record in the Individual Foods files for each report of human milk. However, because amounts of human milk intake are not quantified, these records contain missing values for the amount consumed and for the amounts of energy and nutrients from human milk. Also, records of human milk have a missing value for the food source variable (DR1FS, DR2FS) and the eaten at home variable (DR1_040Z, DR2_040Z) in the Individual Foods files. Records for any other foods and beverages consumed by breast-fed infants and children are included in the Individual Foods files along with their amounts and nutrient information. Because of the missing nutrient information for human milk, no total nutrient intakes (contained in the Total Nutrient Intakes files) were computed for participants with a code 4.

A variable that identifies breast-fed children, DRABF, is included. This variable has a code of 1 if a child consumed breast milk in either intake day.

5 = Not done
This code is assigned when the dietary recall section of the interview did not take place due to various reasons (such as arrived late/left early, refusal, illness, emergency, or equipment failure). These individuals have no records in the Individual Foods files. These individuals have a record in the Total Nutrients file with values only for the following variables: the respondent sequence number (SEQN), the dietary recall status code (DR1DRSTZ or DR2DRSTZ) and for participants one year or older, the fish and shellfish questions in the DR1TOT_D file (DRD340, DRD350A-K, DRD350AQ-JQ, DRD360, DRD370A-V, and DRD370AQ-UQ)

Although there are four possible values, only codes 1 and 4 appear in the Individual Foods file. In addition to the status code described above, the variable DR1_300 and DR2_300 in the Total Nutrients file, denotes the participant's assessment of whether the amount of food he/she consumed on the recall day was usual, much more than usual, or much less than usual.

Participants who reported consuming only water: In 2001-2002 and 2003-2004, individuals who reported consuming only water had no records in the Individual Foods file for that specific day. Their dietary recall status variable for the day was coded as “1” (complete and reliable) in the Total Nutrients file, and the total number of foods and all total nutrient intake variables were coded as “0”. Values were present for other variables collected during the dietary recall.

In 2005-2006, information on all waters were collected during the 24-hour recall and reported in the Individual Foods file, including tap water and bottled water. Therefore, records are now included in the Individual Foods file for participants who consumed only water. There are 3 such individuals in the 2005-2006 datasets. Their dietary recall status variable for the day is coded as “1” (complete and reliable) in the Total Nutrients file and the total number of foods is coded based on how many times water was reported. There are 5 nutrients for the tap water and plain bottled water codes that have values greater than zero - calcium, magnesium, sodium, zinc, and copper. Individuals with just water intake and no food intake will have zero energy intake for the day. Depending on the type of analysis, these individuals may need to be excluded from the analysis.

Food source: The source of each food (where it was obtained, e.g., from a store, fast food restaurant, cafeteria) is included with the 2005-2006 release as it was for 2003-2004. The variable names are DR1FS and DR2FS and are located in the Individual Foods file. Food source information was also collected in 2002, but was not publicly released because of confidentiality issues concerning single-year data. For 2005-2006, a food source for fundraiser sales has been added to reflect a frequently reported response in the “other, specify” field; its food source code number is 26. The code descriptions for this variable are:

Code Description for Source of Food Variable
Code Description
1 Store
2 Restaurant with waiter/waitress
3 Restaurant fast food/pizza
4 Bar/tavern/lounge
5 Restaurant, no additional information
6 Cafeteria not at school
7 Cafeteria at school
8 Child care center
9 Family/adult day care center
10 Soup kitchen/shelter/food pantry facility
11 Meals on Wheels
12 Community food program – other
13 Community program, no additional information
14 Vending machine
15 Common coffee pot or snack tray
16 From someone else/gift
17 Mail order purchase
18 Residential dining facility
19 Grown or caught by you or someone you know
20 Fish caught by you or someone you know
24 Sport, recreation, or entertainment
25 Street vendor, vending truck
26 Fundraiser sales
91 Other, specify

Eating occasion: The variables DR1_030Z and DR2_030Z are located in the Individual Foods file. The code descriptions for the eating occasion variables are shown in the table below.

Code Description for Eating Occasion Variable
Code Description
1 Breakfast
2 Lunch
3 Dinner
4 Supper
5 Brunch
6 Snack
7 Drink
8 Infant feeding
9 Extended consumption
10 Desayuno
11 Almuerzo
12 Comida
13 Merienda
14 Cena
15 Entre comida
16 Botana
17 Bocadillo
18 Tentempie
19 Bebida
91 Other

Eating occasion is designated by the respondent. During the interview, a list of eating occasion names is available to the respondent for reference. However, eating occasion names are not defined for the respondent and the interpretation may differ from one person to another.

Combination foods: Foods that are eaten in combination with other foods, such as cereal with milk, are identified by a combination food type (DR1CCMTX) and a combination food number (DR1CCMNM). They are located in the Individual Foods file. About half of the foods reported in 2005-2006 were consumed in combination with other foods. The code descriptions for this variable are the following:

Code Description for Type of Combination Food Variable
Code Description
0 Non-combination food
1 Beverage w/ additions
2 Cereal w/ additions
3 Bread/baked prod w/ additions
4 Salad
5 Sandwiches
6 Soup
7 Frozen meals
8 Ice cream/frozen yogurt w/ additions
9 Dried beans and vegetable w/ additions
10 Fruit w/ additions
11 Tortilla products
12 Meat, poultry, fish
13 Lunchables®
14 Chips w/ additions
90 Other mixtures

Special diet: Information on whether the participant is currently on any kind of diet to lose weight or for other health-related reason and, if so, the type of diet, is included. The variable DRQSDIET identifies whether a participant is on a special diet. The variables DRQSDT1 through DRQSDT8 and DRQSDT91 identify the type of diet(s) that the participant is following. These variables can be found in the Total Nutrient Intakes file.

Note: A participant could report more than one type of diet, and all the responses were recorded. The variable DRQSDT1 denotes the type of diet the participant followed specifically for weight loss purposes, including a variety of low calorie diets, low carbohydrate diets, and/or high protein diets. If the participant reported being on a high protein diet for the purpose of gaining weight or muscle building instead of weight loss, the response was coded in variable DRQSDT8 (Weight gain/Muscle building diet).

Sample weights for dietary intake data: The NHANES participants were selected on the basis of a national probability design. In order to increase the number of participants for specific demographic groups, a multi-stage, unequal probability of selection design was implemented. The NHANES oversamples African Americans, Mexican Americans, low income persons, adolescents 12-19 years, and persons 60 years and older. Sample weights are constructed that encompass the unequal probabilities of selection, as well as adjustments for non-participation by selected sample persons. In order to produce national, representative estimates, the appropriate sample weights must be used.

For the 2005-2006 NHANES, there were 12,862 persons selected; of these 9950 were considered respondents to the MEC examination and data collection. However, only 9349 of the MEC respondents provided complete dietary intakes for Day 1. Furthermore, of those providing the Day 1 data, only 8429 provided complete dietary intakes for Day 2.

Most analyses of NHANES data use data collected in the MEC and the variable WTMEC2YR should be used for the sample weights. However, for the WWEIA dietary data, different sample weights are recommended for analysis. Although attempts are made to schedule MEC exams uniformly throughout the week, proportionally more exams occur on weekend days than on weekdays. Because food intake can vary by day of the week, use of the MEC weights would disproportionately represent intakes on weekends.

A set of weights WTDRD1 is provided that should be used when an analysis uses the Day 1 dietary recall data (either alone or when Day 1 nutrient data are used in conjunction with MEC data). The set of weights WTDRD1 is applicable to the 9349 respondents with Day 1 data. Day 1 weights were constructed by taking the MEC sample weights (WTMEC2YR) and further adjusting for (a) the additional non-response and (b) the differential allocation by day of the week for the dietary intake data collection. These Day 1 weights are more variable than the MEC weights, and the sample size is smaller, so estimated standard errors using Day 1 data and Day 1 weights are larger than standard errors for similar estimates based on MEC weights.

When analysis is based on both days of dietary intake, only 8429 sample persons have valid data. The NHANES protocol requires an attempt to collect the second day of dietary data at least 3 days after the first day, but the actual number of days between the two interviews is variable. A set of adjusted weights, WTDR2D, is to be used only when analysis uses both Day 1 and Day 2 dietary data. This two-day weight was constructed for the 8429 respondents by taking the Day 1 weights (WTDRD1) and further adjusting for (a) the additional non-response for the second recall and (b) for the proportion of weekend-weekday combinations of Day 1 and Day 2 recalls.

Note that all sample weights are person-level weights and each set of dietary weights should sum to the same population control total as the MEC weights (WTMEC2YR). In addition, the MEC weights (WTMEC2YR) are appropriate for use in the analysis of the fish and shellfish consumption data (i.e., variables DRD340, DRD350A-K, DRD350AQ-JQ DRD360, DRD370A-V, and DRD370AQ-UQ) located in the Day 1 Total Nutrient Intake File (DR1TOT_D), if no other dietary data are included in the analysis. Additional explanation of sample weights and appropriate uses are included in the NHANES Analytic Guidelines. Please also refer to the Analytic Guidelines for further details on other analytic issues at: https://wwwn.cdc.gov/nchs/nhanes/analyticguidelines.aspx.

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 0 YEARS - 150 YEARS

WTDRD1 - Dietary day one sample weight

Variable Name:
WTDRD1
SAS Label:
Dietary day one sample weight
English Text:
Dietary day one sample weight
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
587.82468143 to 338460.18501 Range of Values 9349 9349
. Missing 601 9950

WTDR2D - Dietary two-day sample weight

Variable Name:
WTDR2D
SAS Label:
Dietary two-day sample weight
English Text:
Dietary two-day sample weight
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
790.46780496 to 358726.40791 Range of Values 8429 8429
. Missing 1521 9950

DR1DRSTZ - Dietary recall status

Variable Name:
DR1DRSTZ
SAS Label:
Dietary recall status
English Text:
Dietary recall status
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Reliable and met the minimum criteria 9169 9169
2 Not reliable or not met the minimum criteria 184 9353
4 Reported consuming breast-milk 180 9533
5 Not done 417 9950
. Missing 0 9950

DR1EXMER - Interviewer ID code

Variable Name:
DR1EXMER
SAS Label:
Interviewer ID code
English Text:
Interviewer ID code
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
10 to 91 Range of Values 9533 9533
. Missing 417 9950

DRABF - Breast-fed infant (either day)

Variable Name:
DRABF
SAS Label:
Breast-fed infant (either day)
English Text:
Indicates whether the sample person was an infant who was breast-fed on either of the two recall days.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 184 184
2 No 9165 9349
. Missing 601 9950

DRDINT - Number of days of intake

Variable Name:
DRDINT
SAS Label:
Number of days of intake
English Text:
Indicates whether the sample person has intake data for one or two days.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Day 1 only 920 920
2 Day 1 and day 2 8429 9349
. Missing 601 9950

DR1DAY - Intake day of the week

Variable Name:
DR1DAY
SAS Label:
Intake day of the week
English Text:
Intake day of the week
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Sunday 1665 1665
2 Monday 777 2442
3 Tuesday 556 2998
4 Wednesday 779 3777
5 Thursday 1005 4782
6 Friday 2500 7282
7 Saturday 2251 9533
. Missing 417 9950

DR1LANG - Language respondent used mostly

Variable Name:
DR1LANG
SAS Label:
Language respondent used mostly
English Text:
The respondent spoke mostly:
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 English 8197 8197
2 Spanish 1173 9370
3 English and Spanish 137 9507
4 Other 34 9541
. Missing 409 9950

DR1MNRSP - Main respondent for this interview

Variable Name:
DR1MNRSP
SAS Label:
Main respondent for this interview
English Text:
Who was the main respondent for this interview?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 SP 7026 7026
2 Mother of SP 2014 9040
3 Father of SP 159 9199
4 Wife of SP 16 9215
5 Husband of SP 3 9218
6 Daughter of SP 18 9236
7 Son of SP 5 9241
8 Grandparent of SP 54 9295
9 Friend, Partner, Non Relative 3 9298
10 Translator, not a HH member 1 9299
11 Child care provider, Caretaker 2 9301
12 Other Relative 40 9341
14 Other specify 0 9341
77 Refused 0 9341
99 Don't know 0 9341
. Missing 609 9950

DR1HELPD - Helped in responding for this interview

Variable Name:
DR1HELPD
SAS Label:
Helped in responding for this interview
English Text:
Who helped in responding for this interview
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 SP 657 657
2 Mother of SP 415 1072
3 Father of SP 124 1196
4 Wife of SP 10 1206
5 Husband of SP 3 1209
6 Daughter of SP 13 1222
7 Son of SP 4 1226
8 Grandparent of SP 36 1262
9 Friend, Partner, Non Relative 5 1267
10 Translator, not a HH member 27 1294
11 Child care provider, Caretaker 3 1297
12 Other Relative 41 1338
13 No one 7985 9323
14 Other specify 0 9323
77 Refused 0 9323
99 Don't know 0 9323
. Missing 627 9950

DBQ095Z - Type of table salt used

Variable Name:
DBQ095Z
SAS Label:
Type of table salt used
English Text:
What type of salt {do you/does SP} usually add to {your/his/her/SP's} food at the table? Would you say . . .
English Instructions:
CAPI INSTRUCTION: IF SP AGE <= 5, DISPLAY "DO YOU" FOR FIRST DISPLAY AND {SP'S} FOR SECOND DISPLAY.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Ordinary salt [includes regular iodized salt, sea salt and seasoning salts made with regular salt] 5220 5220
2 Lite salt 283 5503
3 Salt substitute 123 5626
4 Doesn't use or add salt products at the table 3669 9295 DRQSPREP
91 Other 12 9307
99 Don't know 226 9533 DRQSPREP
. Missing 417 9950

DBD100 - How often add salt to food at table

Variable Name:
DBD100
SAS Label:
How often add salt to food at table
English Text:
How often {do you/does SP} add ordinary salt to {your/his/her/SP's} food at the table? Would you say . . .
English Instructions:
CAPI INSTRUCTION: IF SP AGE <= 5, DISPLAY "DO YOU" FOR FIRST DISPLAY AND {SP'S} FOR SECOND DISPLAY.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Rarely 2739 2739
2 Occasionally 1738 4477
3 Very often 1150 5627
7 Refused 0 5627
9 Don't know 11 5638
. Missing 4312 9950

DRQSPREP - Salt used in preparation?

Variable Name:
DRQSPREP
SAS Label:
Salt used in preparation?
English Text:
How often is ordinary salt or seasoned salt added in <B>cooking or preparing</b> foods in your household? Is it never, rarely, occasionally, or very often?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Never 646 646
2 Rarely 1654 2300
3 Occasionally 3170 5470
4 Very Often 3864 9334
9 Don't know 199 9533
. Missing 417 9950

DRQSDIET - On special diet?

Variable Name:
DRQSDIET
SAS Label:
On special diet?
English Text:
Are you <b>currently</b> on any kind of diet, either to lose weight or for some other health-related reason?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 974 974
2 No 8524 9498 DR1TNUMF
9 Don't know 35 9533 DR1TNUMF
. Missing 417 9950

DRQSDT1 - Weight loss/Low cal/Low carb/Hi pro diet

Variable Name:
DRQSDT1
SAS Label:
Weight loss/Low cal/Low carb/Hi pro diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Weight loss diet (including low calorie diets, low carbohydrate diets and/or high protein diets) 543 543
. Missing 9407 9950

DRQSDT2 - Low fat/Low cholesterol diet

Variable Name:
DRQSDT2
SAS Label:
Low fat/Low cholesterol diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 Low fat or low cholesterol diet 138 138
. Missing 9812 9950

DRQSDT3 - Low salt/Low sodium diet

Variable Name:
DRQSDT3
SAS Label:
Low salt/Low sodium diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
3 Low salt or low sodium diet (including diet to lower blood pressure or hypertension) 85 85
. Missing 9865 9950

DRQSDT4 - Sugar free/Low sugar diet

Variable Name:
DRQSDT4
SAS Label:
Sugar free/Low sugar diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
4 Sugar free or low sugar diet 67 67
. Missing 9883 9950

DRQSDT5 - Low fiber diet

Variable Name:
DRQSDT5
SAS Label:
Low fiber diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
5 Low fiber or low residue diet 3 3
. Missing 9947 9950

DRQSDT6 - High fiber diet

Variable Name:
DRQSDT6
SAS Label:
High fiber diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
6 High fiber or high residue diet 5 5
. Missing 9945 9950

DRQSDT7 - Diabetic diet

Variable Name:
DRQSDT7
SAS Label:
Diabetic diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
7 Diabetic diet (including gestational diabetic diets) 133 133
. Missing 9817 9950

DRQSDT8 - Weight gain/Muscle building diet

Variable Name:
DRQSDT8
SAS Label:
Weight gain/Muscle building diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
8 Weight gain or muscle building diet 33 33
. Missing 9917 9950

DRQSDT91 - Other special diet

Variable Name:
DRQSDT91
SAS Label:
Other special diet
English Text:
What kind of diet are you on? (Is it a weight loss or low calorie diet: low fat or cholesterol diet; low salt or sodium diet; sugar free or low sugar diet; low fiber diet; high fiber diet; diabetic diet; or another type of diet?)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
91 Other special diet 70 70
. Missing 9880 9950

DR1TNUMF - Number of foods reported

Variable Name:
DR1TNUMF
SAS Label:
Number of foods reported
English Text:
Total number of foods reported in the individual foods file
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 to 57 Range of Values 9349 9349
. Missing 601 9950

DR1TKCAL - Energy (kcal)

Variable Name:
DR1TKCAL
SAS Label:
Energy (kcal)
English Text:
Energy (kcal)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 10569 Range of Values 9169 9169
. Missing 781 9950

DR1TPROT - Protein (gm)

Variable Name:
DR1TPROT
SAS Label:
Protein (gm)
English Text:
Protein (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 436.33 Range of Values 9169 9169
. Missing 781 9950

DR1TCARB - Carbohydrate (gm)

Variable Name:
DR1TCARB
SAS Label:
Carbohydrate (gm)
English Text:
Carbohydrate (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 1486.7 Range of Values 9169 9169
. Missing 781 9950

DR1TSUGR - Total sugars (gm)

Variable Name:
DR1TSUGR
SAS Label:
Total sugars (gm)
English Text:
Total sugars (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 990.65 Range of Values 9169 9169
. Missing 781 9950

DR1TFIBE - Dietary fiber (gm)

Variable Name:
DR1TFIBE
SAS Label:
Dietary fiber (gm)
English Text:
Dietary fiber (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 91 Range of Values 9169 9169
. Missing 781 9950

DR1TTFAT - Total fat (gm)

Variable Name:
DR1TTFAT
SAS Label:
Total fat (gm)
English Text:
Total fat (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 422.59 Range of Values 9169 9169
. Missing 781 9950

DR1TSFAT - Total saturated fatty acids (gm)

Variable Name:
DR1TSFAT
SAS Label:
Total saturated fatty acids (gm)
English Text:
Total saturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 158.547 Range of Values 9169 9169
. Missing 781 9950

DR1TMFAT - Total monounsaturated fatty acids (gm)

Variable Name:
DR1TMFAT
SAS Label:
Total monounsaturated fatty acids (gm)
English Text:
Total monounsaturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 174.166 Range of Values 9169 9169
. Missing 781 9950

DR1TPFAT - Total polyunsaturated fatty acids (gm)

Variable Name:
DR1TPFAT
SAS Label:
Total polyunsaturated fatty acids (gm)
English Text:
Total polyunsaturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 120.784 Range of Values 9169 9169
. Missing 781 9950

DR1TCHOL - Cholesterol (mg)

Variable Name:
DR1TCHOL
SAS Label:
Cholesterol (mg)
English Text:
Cholesterol (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2587 Range of Values 9169 9169
. Missing 781 9950

DR1TATOC - Vitamin E as alpha-tocopherol (mg)

Variable Name:
DR1TATOC
SAS Label:
Vitamin E as alpha-tocopherol (mg)
English Text:
Vitamin E as alpha-tocopherol (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 78.37 Range of Values 9169 9169
. Missing 781 9950

DR1TATOA - Added alpha-tocopherol (Vitamin E) (mg)

Variable Name:
DR1TATOA
SAS Label:
Added alpha-tocopherol (Vitamin E) (mg)
English Text:
Added alpha-tocopherol (Vitamin E) (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 53.99 Range of Values 9169 9169
. Missing 781 9950

DR1TRET - Retinol (mcg)

Variable Name:
DR1TRET
SAS Label:
Retinol (mcg)
English Text:
Retinol (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 24834 Range of Values 9169 9169
. Missing 781 9950

DR1TVARA - Vitamin A, RAE (mcg)

Variable Name:
DR1TVARA
SAS Label:
Vitamin A, RAE (mcg)
English Text:
Vitamin A as retinol activity equivalents (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 24906 Range of Values 9169 9169
. Missing 781 9950

DR1TACAR - Alpha-carotene (mcg)

Variable Name:
DR1TACAR
SAS Label:
Alpha-carotene (mcg)
English Text:
Alpha-carotene (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 12664 Range of Values 9169 9169
. Missing 781 9950

DR1TBCAR - Beta-carotene (mcg)

Variable Name:
DR1TBCAR
SAS Label:
Beta-carotene (mcg)
English Text:
Beta-carotene (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 52701 Range of Values 9169 9169
. Missing 781 9950

DR1TCRYP - Beta-cryptoxanthin (mcg)

Variable Name:
DR1TCRYP
SAS Label:
Beta-cryptoxanthin (mcg)
English Text:
Beta-cryptoxanthin (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 7368 Range of Values 9169 9169
. Missing 781 9950

DR1TLYCO - Lycopene (mcg)

Variable Name:
DR1TLYCO
SAS Label:
Lycopene (mcg)
English Text:
Lycopene (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 255847 Range of Values 9169 9169
. Missing 781 9950

DR1TLZ - Lutein + zeaxanthin (mcg)

Variable Name:
DR1TLZ
SAS Label:
Lutein + zeaxanthin (mcg)
English Text:
Lutein + zeaxanthin (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 106139 Range of Values 9169 9169
. Missing 781 9950

DR1TVB1 - Thiamin (Vitamin B1) (mg)

Variable Name:
DR1TVB1
SAS Label:
Thiamin (Vitamin B1) (mg)
English Text:
Thiamin (Vitamin B1) (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 17.673 Range of Values 9169 9169
. Missing 781 9950

DR1TVB2 - Riboflavin (Vitamin B2) (mg)

Variable Name:
DR1TVB2
SAS Label:
Riboflavin (Vitamin B2) (mg)
English Text:
Riboflavin (Vitamin B2) (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 13.76 Range of Values 9169 9169
. Missing 781 9950

DR1TNIAC - Niacin (mg)

Variable Name:
DR1TNIAC
SAS Label:
Niacin (mg)
English Text:
Niacin (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 197.416 Range of Values 9169 9169
. Missing 781 9950

DR1TVB6 - Vitamin B6 (mg)

Variable Name:
DR1TVB6
SAS Label:
Vitamin B6 (mg)
English Text:
Vitamin B6 (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 17.693 Range of Values 9169 9169
. Missing 781 9950

DR1TFOLA - Total folate (mcg)

Variable Name:
DR1TFOLA
SAS Label:
Total folate (mcg)
English Text:
Total folate (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 3927 Range of Values 9169 9169
. Missing 781 9950

DR1TFA - Folic acid (mcg)

Variable Name:
DR1TFA
SAS Label:
Folic acid (mcg)
English Text:
Folic acid (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 3720 Range of Values 9169 9169
. Missing 781 9950

DR1TFF - Food folate (mcg)

Variable Name:
DR1TFF
SAS Label:
Food folate (mcg)
English Text:
Food folate (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 1519 Range of Values 9169 9169
. Missing 781 9950

DR1TFDFE - Folate, DFE (mcg)

Variable Name:
DR1TFDFE
SAS Label:
Folate, DFE (mcg)
English Text:
Folate as dietary folate equivalents (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 6527 Range of Values 9169 9169
. Missing 781 9950

DR1TCHL - Total choline (mg)

Variable Name:
DR1TCHL
SAS Label:
Total choline (mg)
English Text:
Total choline (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 1979.7 Range of Values 9169 9169
. Missing 781 9950

DR1TVB12 - Vitamin B12 (mcg)

Variable Name:
DR1TVB12
SAS Label:
Vitamin B12 (mcg)
English Text:
Vitamin B12 (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 267.43 Range of Values 9169 9169
. Missing 781 9950

DR1TB12A - Added vitamin B12 (mcg)

Variable Name:
DR1TB12A
SAS Label:
Added vitamin B12 (mcg)
English Text:
Added vitamin B12 (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 66.32 Range of Values 9169 9169
. Missing 781 9950

DR1TVC - Vitamin C (mg)

Variable Name:
DR1TVC
SAS Label:
Vitamin C (mg)
English Text:
Vitamin C (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 1383.3 Range of Values 9169 9169
. Missing 781 9950

DR1TVK - Vitamin K (mcg)

Variable Name:
DR1TVK
SAS Label:
Vitamin K (mcg)
English Text:
Vitamin K (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 3678.2 Range of Values 9169 9169
. Missing 781 9950

DR1TCALC - Calcium (mg)

Variable Name:
DR1TCALC
SAS Label:
Calcium (mg)
English Text:
Calcium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
20 to 5668 Range of Values 9169 9169
. Missing 781 9950

DR1TPHOS - Phosphorus (mg)

Variable Name:
DR1TPHOS
SAS Label:
Phosphorus (mg)
English Text:
Phosphorus (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 7699 Range of Values 9169 9169
. Missing 781 9950

DR1TMAGN - Magnesium (mg)

Variable Name:
DR1TMAGN
SAS Label:
Magnesium (mg)
English Text:
Magnesium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 to 1773 Range of Values 9169 9169
. Missing 781 9950

DR1TIRON - Iron (mg)

Variable Name:
DR1TIRON
SAS Label:
Iron (mg)
English Text:
Iron (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 93.11 Range of Values 9169 9169
. Missing 781 9950

DR1TZINC - Zinc (mg)

Variable Name:
DR1TZINC
SAS Label:
Zinc (mg)
English Text:
Zinc (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.08 to 314.3 Range of Values 9169 9169
. Missing 781 9950

DR1TCOPP - Copper (mg)

Variable Name:
DR1TCOPP
SAS Label:
Copper (mg)
English Text:
Copper (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.025 to 47.419 Range of Values 9169 9169
. Missing 781 9950

DR1TSODI - Sodium (mg)

Variable Name:
DR1TSODI
SAS Label:
Sodium (mg)
English Text:
Sodium (mg) (adjusted for salt use in food preparation)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
31 to 18053 Range of Values 9169 9169
. Missing 781 9950

DR1TPOTA - Potassium (mg)

Variable Name:
DR1TPOTA
SAS Label:
Potassium (mg)
English Text:
Potassium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 14097 Range of Values 9169 9169
. Missing 781 9950

DR1TSELE - Selenium (mcg)

Variable Name:
DR1TSELE
SAS Label:
Selenium (mcg)
English Text:
Selenium (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 651.7 Range of Values 9169 9169
. Missing 781 9950

DR1TCAFF - Caffeine (mg)

Variable Name:
DR1TCAFF
SAS Label:
Caffeine (mg)
English Text:
Caffeine (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2134 Range of Values 9169 9169
. Missing 781 9950

DR1TTHEO - Theobromine (mg)

Variable Name:
DR1TTHEO
SAS Label:
Theobromine (mg)
English Text:
Theobromine (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 955 Range of Values 9169 9169
. Missing 781 9950

DR1TALCO - Alcohol (gm)

Variable Name:
DR1TALCO
SAS Label:
Alcohol (gm)
English Text:
Alcohol (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 337 Range of Values 9169 9169
. Missing 781 9950

DR1TMOIS - Moisture (gm)

Variable Name:
DR1TMOIS
SAS Label:
Moisture (gm)
English Text:
Moisture (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
113.14 to 13560.89 Range of Values 9169 9169
. Missing 781 9950

DR1TS040 - SFA 4:0 (Butanoic) (gm)

Variable Name:
DR1TS040
SAS Label:
SFA 4:0 (Butanoic) (gm)
English Text:
SFA 4:0 (Butanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 5.475 Range of Values 9169 9169
. Missing 781 9950

DR1TS060 - SFA 6:0 (Hexanoic) (gm)

Variable Name:
DR1TS060
SAS Label:
SFA 6:0 (Hexanoic) (gm)
English Text:
SFA 6:0 (Hexanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 3.249 Range of Values 9169 9169
. Missing 781 9950

DR1TS080 - SFA 8:0 (Octanoic) (gm)

Variable Name:
DR1TS080
SAS Label:
SFA 8:0 (Octanoic) (gm)
English Text:
SFA 8:0 (Octanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 13.917 Range of Values 9169 9169
. Missing 781 9950

DR1TS100 - SFA 10:0 (Decanoic) (gm)

Variable Name:
DR1TS100
SAS Label:
SFA 10:0 (Decanoic) (gm)
English Text:
SFA 10:0 (Decanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 10.297 Range of Values 9169 9169
. Missing 781 9950

DR1TS120 - SFA 12:0 (Dodecanoic) (gm)

Variable Name:
DR1TS120
SAS Label:
SFA 12:0 (Dodecanoic) (gm)
English Text:
SFA 12:0 (Dodecanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 18.42 Range of Values 9169 9169
. Missing 781 9950

DR1TS140 - SFA 14:0 (Tetradecanoic) (gm)

Variable Name:
DR1TS140
SAS Label:
SFA 14:0 (Tetradecanoic) (gm)
English Text:
SFA 14:0 (Tetradecanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 18.143 Range of Values 9169 9169
. Missing 781 9950

DR1TS160 - SFA 16:0 (Hexadecanoic) (gm)

Variable Name:
DR1TS160
SAS Label:
SFA 16:0 (Hexadecanoic) (gm)
English Text:
SFA 16:0 (Hexadecanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 80.786 Range of Values 9169 9169
. Missing 781 9950

DR1TS180 - SFA 18:0 (Octadecanoic) (gm)

Variable Name:
DR1TS180
SAS Label:
SFA 18:0 (Octadecanoic) (gm)
English Text:
SFA 18:0 (Octadecanoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 42.556 Range of Values 9169 9169
. Missing 781 9950

DR1TM161 - MFA 16:1 (Hexadecenoic) (gm)

Variable Name:
DR1TM161
SAS Label:
MFA 16:1 (Hexadecenoic) (gm)
English Text:
MFA 16:1 (Hexadecenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 9.439 Range of Values 9169 9169
. Missing 781 9950

DR1TM181 - MFA 18:1 (Octadecenoic) (gm)

Variable Name:
DR1TM181
SAS Label:
MFA 18:1 (Octadecenoic) (gm)
English Text:
MFA 18:1 (Octadecenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 167.266 Range of Values 9169 9169
. Missing 781 9950

DR1TM201 - MFA 20:1 (Eicosenoic) (gm)

Variable Name:
DR1TM201
SAS Label:
MFA 20:1 (Eicosenoic) (gm)
English Text:
MFA 20:1 (Eicosenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 3.834 Range of Values 9169 9169
. Missing 781 9950

DR1TM221 - MFA 22:1 (Docosenoic) (gm)

Variable Name:
DR1TM221
SAS Label:
MFA 22:1 (Docosenoic) (gm)
English Text:
MFA 22:1 (Docosenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 9.992 Range of Values 9169 9169
. Missing 781 9950

DR1TP182 - PFA 18:2 (Octadecadienoic) (gm)

Variable Name:
DR1TP182
SAS Label:
PFA 18:2 (Octadecadienoic) (gm)
English Text:
PFA 18:2 (Octadecadienoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 110.503 Range of Values 9169 9169
. Missing 781 9950

DR1TP183 - PFA 18:3 (Octadecatrienoic) (gm)

Variable Name:
DR1TP183
SAS Label:
PFA 18:3 (Octadecatrienoic) (gm)
English Text:
PFA 18:3 (Octadecatrienoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 12.983 Range of Values 9169 9169
. Missing 781 9950

DR1TP184 - PFA 18:4 (Octadecatetraenoic) (gm)

Variable Name:
DR1TP184
SAS Label:
PFA 18:4 (Octadecatetraenoic) (gm)
English Text:
PFA 18:4 (Octadecatetraenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 0.775 Range of Values 9169 9169
. Missing 781 9950

DR1TP204 - PFA 20:4 (Eicosatetraenoic) (gm)

Variable Name:
DR1TP204
SAS Label:
PFA 20:4 (Eicosatetraenoic) (gm)
English Text:
PFA 20:4 (Eicosatetraenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2.421 Range of Values 9169 9169
. Missing 781 9950

DR1TP205 - PFA 20:5 (Eicosapentaenoic) (gm)

Variable Name:
DR1TP205
SAS Label:
PFA 20:5 (Eicosapentaenoic) (gm)
English Text:
PFA 20:5 (Eicosapentaenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2.589 Range of Values 9169 9169
. Missing 781 9950

DR1TP225 - PFA 22:5 (Docosapentaenoic) (gm)

Variable Name:
DR1TP225
SAS Label:
PFA 22:5 (Docosapentaenoic) (gm)
English Text:
PFA 22:5 (Docosapentaenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2.203 Range of Values 9169 9169
. Missing 781 9950

DR1TP226 - PFA 22:6 (Docosahexaenoic) (gm)

Variable Name:
DR1TP226
SAS Label:
PFA 22:6 (Docosahexaenoic) (gm)
English Text:
PFA 22:6 (Docosahexaenoic) (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 6.39 Range of Values 9169 9169
. Missing 781 9950

DR1_300 - Compare food consumed yesterday to usual

Variable Name:
DR1_300
SAS Label:
Compare food consumed yesterday to usual
English Text:
Was the amount of food that {you/NAME} ate yesterday much more than usual, usual, or much less than usual?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Much more than usual 766 766
2 Usual 6888 7654
3 Much less than usual 1830 9484
7 Refused 2 9486
9 Don't know 47 9533
. Missing 417 9950

DR1_320Z - Total plain water drank yesterday (gm)

Variable Name:
DR1_320Z
SAS Label:
Total plain water drank yesterday (gm)
English Text:
Total plain water drank yesterday - including plain tap water, water from a drinking fountain, water from a water cooler, bottled water, and spring water.
English Instructions:
Calculated from water consumption records reported as part of the 24-hour dietary recall interview.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 10000 Range of Values 9349 9349
. Missing 601 9950

DR1_330Z - Total tap water drank yesterday (gm)

Variable Name:
DR1_330Z
SAS Label:
Total tap water drank yesterday (gm)
English Text:
Total tap water drank yesterday - including filtered tap water and water from a drinking fountain.
English Instructions:
Calculated from tap water consumption records reported as part of the 24-hour dietary recall interview.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 7584 Range of Values 9349 9349
. Missing 601 9950

DR1BWATZ - Total bottled water drank yesterday (gm)

Variable Name:
DR1BWATZ
SAS Label:
Total bottled water drank yesterday (gm)
English Text:
Total bottled water drank yesterday (gm)
English Instructions:
Calculated from bottle water consumption records reported as part of the 24-hour dietary recall interview.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 10000 Range of Values 9349 9349
. Missing 601 9950

DR1TWS - Tap water source

Variable Name:
DR1TWS
SAS Label:
Tap water source
English Text:
When you drink tap water, what is the main source of the tap water? Is the city water supply (community water supply); a well or rain cistern; a spring; or something else?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Community supply 5808 5808
2 Well or rain cistern 1111 6919
3 Spring 147 7066
4 Don't drink tap water 1950 9016
91 Other 9 9025
99 Don't know 508 9533
. Missing 417 9950

DRD340 - Shellfish eaten during past 30 days

Variable Name:
DRD340
SAS Label:
Shellfish eaten during past 30 days
English Text:
Please look at this list of shellfish. During the past 30 days did you eat any types of shellfish listed on this card? Include any foods that had shellfish in them such as sandwiches, soups, or salads.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 4209 4209
2 No 4787 8996 DRD360
7 Refused 11 9007 DRD360
9 Don't know 35 9042 DRD360
. Missing 908 9950

DRD350A - Clams eaten during past 30 days

Variable Name:
DRD350A
SAS Label:
Clams eaten during past 30 days
English Text:
Clams eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 493 493
2 No 3716 4209 DRD350B
. Missing 5741 9950

DRD350AQ - # of times clams eaten in past 30 days

Variable Name:
DRD350AQ
SAS Label:
# of times clams eaten in past 30 days
English Text:
Number of times clams were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 20 Range of Values 493 493
. Missing 9457 9950

DRD350B - Crabs eaten during past 30 days

Variable Name:
DRD350B
SAS Label:
Crabs eaten during past 30 days
English Text:
Crabs eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 888 888
2 No 3321 4209 DRD350C
. Missing 5741 9950

DRD350BQ - # of times crabs eaten in past 30 days

Variable Name:
DRD350BQ
SAS Label:
# of times crabs eaten in past 30 days
English Text:
Number of times crab was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 888 888
. Missing 9062 9950

DRD350C - Crayfish eaten during past 30 days

Variable Name:
DRD350C
SAS Label:
Crayfish eaten during past 30 days
English Text:
Crayfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 85 85
2 No 4124 4209 DRD350D
. Missing 5741 9950

DRD350CQ - # of times crayfish eaten past 30 days

Variable Name:
DRD350CQ
SAS Label:
# of times crayfish eaten past 30 days
English Text:
Number of times crayfish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 85 85
. Missing 9865 9950

DRD350D - Lobsters eaten during past 30 days

Variable Name:
DRD350D
SAS Label:
Lobsters eaten during past 30 days
English Text:
Lobsters eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 321 321
2 No 3888 4209 DRD350E
. Missing 5741 9950

DRD350DQ - # of times lobsters eaten past 30 days

Variable Name:
DRD350DQ
SAS Label:
# of times lobsters eaten past 30 days
English Text:
Number of times lobster was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 12 Range of Values 321 321
. Missing 9629 9950

DRD350E - Mussels eaten during past 30 days

Variable Name:
DRD350E
SAS Label:
Mussels eaten during past 30 days
English Text:
Mussels eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 149 149
2 No 4060 4209 DRD350F
. Missing 5741 9950

DRD350EQ - # of times mussels eaten in past 30 days

Variable Name:
DRD350EQ
SAS Label:
# of times mussels eaten in past 30 days
English Text:
Number of times mussels were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 8 Range of Values 149 149
. Missing 9801 9950

DRD350F - Oysters eaten during past 30 days

Variable Name:
DRD350F
SAS Label:
Oysters eaten during past 30 days
English Text:
Oysters eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 334 334
2 No 3875 4209 DRD350G
. Missing 5741 9950

DRD350FQ - # of times oysters eaten in past 30 days

Variable Name:
DRD350FQ
SAS Label:
# of times oysters eaten in past 30 days
English Text:
Number of times oysters were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 334 334
. Missing 9616 9950

DRD350G - Scallops eaten during past 30 days

Variable Name:
DRD350G
SAS Label:
Scallops eaten during past 30 days
English Text:
Scallops eaten during the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 488 488
2 No 3721 4209 DRD350H
. Missing 5741 9950

DRD350GQ - # of times scallops eaten past 30 days

Variable Name:
DRD350GQ
SAS Label:
# of times scallops eaten past 30 days
English Text:
Number of times scallops were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 20 Range of Values 488 488
. Missing 9462 9950

DRD350H - Shrimp eaten during past 30 days

Variable Name:
DRD350H
SAS Label:
Shrimp eaten during past 30 days
English Text:
Shrimp eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 3653 3653
2 No 556 4209 DRD350I
. Missing 5741 9950

DRD350HQ - # of times shrimp eaten in past 30 days

Variable Name:
DRD350HQ
SAS Label:
# of times shrimp eaten in past 30 days
English Text:
Number of times shrimp was eaten in the last 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 3653 3653
. Missing 6297 9950

DRD350I - Other shellfish eaten past 30 days

Variable Name:
DRD350I
SAS Label:
Other shellfish eaten past 30 days
English Text:
Other shellfish ( ex. octopus, squid) eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 204 204
2 No 4005 4209 DRD350J
. Missing 5741 9950

DRD350IQ - # of times other shellfish eaten

Variable Name:
DRD350IQ
SAS Label:
# of times other shellfish eaten
English Text:
Number of times other shellfish (ex. octopus, squid) was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 16 Range of Values 204 204
. Missing 9746 9950

DRD350J - Other unknown shellfish eaten past 30 d

Variable Name:
DRD350J
SAS Label:
Other unknown shellfish eaten past 30 d
English Text:
Other unknown shellfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 22 22
2 No 4187 4209 DRD350K
. Missing 5741 9950

DRD350JQ - # of times other unknown shellfish eaten

Variable Name:
DRD350JQ
SAS Label:
# of times other unknown shellfish eaten
English Text:
Number of times other unknown shellfish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 10 Range of Values 22 22
. Missing 9928 9950

DRD350K - Refused on shellfish eaten past 30 days

Variable Name:
DRD350K
SAS Label:
Refused on shellfish eaten past 30 days
English Text:
Refused to give detailed information on shellfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 0 0
2 No 4209 4209
. Missing 5741 9950

DRD360 - Fish eaten during past 30 days

Variable Name:
DRD360
SAS Label:
Fish eaten during past 30 days
English Text:
Please look at this list of fish. During the past 30 days did you eat any types of fish listed on this card? Include any foods that had fish in them such as sandwiches, soups, or salads.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 5571 5571
2 No 3422 8993 End of Section
7 Refused 4 8997 End of Section
9 Don't know 45 9042 End of Section
. Missing 908 9950

DRD370A - Breaded fish products eaten past 30 days

Variable Name:
DRD370A
SAS Label:
Breaded fish products eaten past 30 days
English Text:
Breaded fish products eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 962 962
2 No 4609 5571 DRD370B
. Missing 4379 9950

DRD370AQ - # of times breaded fish products eaten

Variable Name:
DRD370AQ
SAS Label:
# of times breaded fish products eaten
English Text:
Number of times breaded fish products were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 12 Range of Values 962 962
. Missing 8988 9950

DRD370B - Tuna eaten during past 30 days

Variable Name:
DRD370B
SAS Label:
Tuna eaten during past 30 days
English Text:
Tuna eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2490 2490
2 No 3081 5571 DRD370C
. Missing 4379 9950

DRD370BQ - # of times tuna eaten in past 30 days

Variable Name:
DRD370BQ
SAS Label:
# of times tuna eaten in past 30 days
English Text:
Number of times tuna was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 2490 2490
. Missing 7460 9950

DRD370C - Bass eaten during past 30 days

Variable Name:
DRD370C
SAS Label:
Bass eaten during past 30 days
English Text:
Bass eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 126 126
2 No 5445 5571 DRD370D
. Missing 4379 9950

DRD370CQ - # of times bass eaten in past 30 days

Variable Name:
DRD370CQ
SAS Label:
# of times bass eaten in past 30 days
English Text:
Number of times bass was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 126 126
. Missing 9824 9950

DRD370D - Catfish eaten during past 30 days

Variable Name:
DRD370D
SAS Label:
Catfish eaten during past 30 days
English Text:
Catfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 872 872
2 No 4699 5571 DRD370E
. Missing 4379 9950

DRD370DQ - # of times catfish eaten in past 30 days

Variable Name:
DRD370DQ
SAS Label:
# of times catfish eaten in past 30 days
English Text:
Number of times catfish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 872 872
. Missing 9078 9950

DRD370E - Cod eaten during past 30 days

Variable Name:
DRD370E
SAS Label:
Cod eaten during past 30 days
English Text:
Cod eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 393 393
2 No 5178 5571 DRD370F
. Missing 4379 9950

DRD370EQ - # of times cod eaten in past 30 days

Variable Name:
DRD370EQ
SAS Label:
# of times cod eaten in past 30 days
English Text:
Number of times cod was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 393 393
. Missing 9557 9950

DRD370F - Flatfish eaten during past 30 days

Variable Name:
DRD370F
SAS Label:
Flatfish eaten during past 30 days
English Text:
Flatfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 469 469
2 No 5102 5571 DRD370G
. Missing 4379 9950

DRD370FQ - # of times flatfish eaten past 30 days

Variable Name:
DRD370FQ
SAS Label:
# of times flatfish eaten past 30 days
English Text:
Number of times flatfish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 469 469
. Missing 9481 9950

DRD370G - Haddock eaten during past 30 days

Variable Name:
DRD370G
SAS Label:
Haddock eaten during past 30 days
English Text:
Haddock eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 239 239
2 No 5332 5571 DRD370H
. Missing 4379 9950

DRD370GQ - # of times haddock eaten in past 30 days

Variable Name:
DRD370GQ
SAS Label:
# of times haddock eaten in past 30 days
English Text:
Number of times haddock was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 12 Range of Values 239 239
. Missing 9711 9950

DRD370H - Mackerel eaten during past 30 days

Variable Name:
DRD370H
SAS Label:
Mackerel eaten during past 30 days
English Text:
Mackerel eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 71 71
2 No 5500 5571 DRD370I
. Missing 4379 9950

DRD370HQ - # of times mackerel eaten past 30 days

Variable Name:
DRD370HQ
SAS Label:
# of times mackerel eaten past 30 days
English Text:
Number of times mackerel was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 71 71
. Missing 9879 9950

DRD370I - Perch eaten during past 30 days

Variable Name:
DRD370I
SAS Label:
Perch eaten during past 30 days
English Text:
Perch eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 180 180
2 No 5391 5571 DRD370J
. Missing 4379 9950

DRD370IQ - # of times perch eaten in past 30 days

Variable Name:
DRD370IQ
SAS Label:
# of times perch eaten in past 30 days
English Text:
Number of times perch was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 12 Range of Values 180 180
. Missing 9770 9950

DRD370J - Pike eaten during past 30 days

Variable Name:
DRD370J
SAS Label:
Pike eaten during past 30 days
English Text:
Pike eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 24 24
2 No 5547 5571 DRD370K
. Missing 4379 9950

DRD370JQ - # of times pike eaten in past 30 days

Variable Name:
DRD370JQ
SAS Label:
# of times pike eaten in past 30 days
English Text:
Number of times pike was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 3 Range of Values 24 24
. Missing 9926 9950

DRD370K - Pollock eaten during past 30 days

Variable Name:
DRD370K
SAS Label:
Pollock eaten during past 30 days
English Text:
Pollock eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 151 151
2 No 5420 5571 DRD370L
. Missing 4379 9950

DRD370KQ - # of times pollock eaten in past 30 days

Variable Name:
DRD370KQ
SAS Label:
# of times pollock eaten in past 30 days
English Text:
Number of times pollock was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 20 Range of Values 151 151
. Missing 9799 9950

DRD370L - Porgy eaten during past 30 days

Variable Name:
DRD370L
SAS Label:
Porgy eaten during past 30 days
English Text:
Porgy eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 22 22
2 No 5549 5571 DRD370M
. Missing 4379 9950

DRD370LQ - # of times porgy eaten in past 30 days

Variable Name:
DRD370LQ
SAS Label:
# of times porgy eaten in past 30 days
English Text:
Number of times porgy was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 4 Range of Values 22 22
. Missing 9928 9950

DRD370M - Salmon eaten during past 30 days

Variable Name:
DRD370M
SAS Label:
Salmon eaten during past 30 days
English Text:
Salmon eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1530 1530
2 No 4041 5571 DRD370N
. Missing 4379 9950

DRD370MQ - # of times salmon eaten in past 30 days

Variable Name:
DRD370MQ
SAS Label:
# of times salmon eaten in past 30 days
English Text:
Number of times salmon was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 1530 1530
. Missing 8420 9950

DRD370N - Sardines eaten during past 30 days

Variable Name:
DRD370N
SAS Label:
Sardines eaten during past 30 days
English Text:
Sardines eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 223 223
2 No 5348 5571 DRD370O
. Missing 4379 9950

DRD370NQ - # of times sardines eaten past 30 days

Variable Name:
DRD370NQ
SAS Label:
# of times sardines eaten past 30 days
English Text:
Number of times sardines were eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 223 223
. Missing 9727 9950

DRD370O - Sea bass eaten during past 30 days

Variable Name:
DRD370O
SAS Label:
Sea bass eaten during past 30 days
English Text:
Sea bass eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 73 73
2 No 5498 5571 DRD370P
. Missing 4379 9950

DRD370OQ - # of times sea bass eaten past 30 days

Variable Name:
DRD370OQ
SAS Label:
# of times sea bass eaten past 30 days
English Text:
Number of times sea bass was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 5 Range of Values 73 73
. Missing 9877 9950

DRD370P - Shark eaten during past 30 days

Variable Name:
DRD370P
SAS Label:
Shark eaten during past 30 days
English Text:
Shark eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 18 18
2 No 5553 5571 DRD370Q
. Missing 4379 9950

DRD370PQ - # of times shark eaten in past 30 days

Variable Name:
DRD370PQ
SAS Label:
# of times shark eaten in past 30 days
English Text:
Number of times shark was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 4 Range of Values 18 18
. Missing 9932 9950

DRD370Q - Swordfish eaten during past 30 days

Variable Name:
DRD370Q
SAS Label:
Swordfish eaten during past 30 days
English Text:
Swordfish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 66 66
2 No 5505 5571 DRD370R
. Missing 4379 9950

DRD370QQ - # of times swordfish eaten past 30 days

Variable Name:
DRD370QQ
SAS Label:
# of times swordfish eaten past 30 days
English Text:
Number of times swordfish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 5 Range of Values 66 66
. Missing 9884 9950

DRD370R - Trout eaten during past 30 days

Variable Name:
DRD370R
SAS Label:
Trout eaten during past 30 days
English Text:
Trout eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 303 303
2 No 5268 5571 DRD370S
. Missing 4379 9950

DRD370RQ - # of times trout eaten in past 30 days

Variable Name:
DRD370RQ
SAS Label:
# of times trout eaten in past 30 days
English Text:
Number of times trout was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 303 303
. Missing 9647 9950

DRD370S - Walleye eaten during past 30 days

Variable Name:
DRD370S
SAS Label:
Walleye eaten during past 30 days
English Text:
Walleye eaten during the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 101 101
2 No 5470 5571 DRD370T
. Missing 4379 9950

DRD370SQ - # of times walleye eaten in past 30 days

Variable Name:
DRD370SQ
SAS Label:
# of times walleye eaten in past 30 days
English Text:
Number of times walleye was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 8 Range of Values 101 101
. Missing 9849 9950

DRD370T - Other fish eaten during past 30 days

Variable Name:
DRD370T
SAS Label:
Other fish eaten during past 30 days
English Text:
Other type of fish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 905 905
2 No 4666 5571 DRD370U
. Missing 4379 9950

DRD370TQ - # of times other fish eaten past 30 days

Variable Name:
DRD370TQ
SAS Label:
# of times other fish eaten past 30 days
English Text:
Number of times other type of fish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 905 905
. Missing 9045 9950

DRD370U - Other unknown fish eaten in past 30 days

Variable Name:
DRD370U
SAS Label:
Other unknown fish eaten in past 30 days
English Text:
Other unknown type eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 428 428
2 No 5143 5571 DRD370V
. Missing 4379 9950

DRD370UQ - # of times other unknown fish eaten

Variable Name:
DRD370UQ
SAS Label:
# of times other unknown fish eaten
English Text:
Number of times other unknown type of fish was eaten in the past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 428 428
. Missing 9522 9950

DRD370V - Refused on fish eaten past 30 days

Variable Name:
DRD370V
SAS Label:
Refused on fish eaten past 30 days
English Text:
Refused to give detailed information on fish eaten during past 30 days
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 0 0
2 No 5570 5570
. Missing 4380 9950

Appendix 1. Changes between WWEIA 2001-2002, WWEIA 2003-2004 and WWEIA 2005-2006

Changes between WWEIA 2001-2002, WWEIA 2003-2004 and WWEIA 2005-2006

Item

WWEIA 2001-2002

WWEIA 2003-2004

WWEIA 2005-2006

Number of days of intake data released on each respondent

1 day

2 days

2 days

Nutrients included

Food energy and 60

nutrients/food components

Food energy and 62 nutrients/food components. "Added vitamin E" and "Added vitamin B12" were added.

Food energy and 63 nutrients/food components. Total choline added.

Food source (Where

food obtained)

Collected only in 2002; not publicly released.

Collected and released.

Values for 25 food sources.

Collected and released.

Values for 26 food sources; added “fundraiser sales”.

Combination food types

Values for 14

combination types

Values for 15 combination types; added “chips with additions”.

Values for 15

combination types

Eating occasion names

18 values

20 values; 3 existing values modified and 2 new values.

20 values

Special diet variables

Collected only in 2002; not publicly released.

Collected and released.

Collected and released.

Water consumed

(does not include the moisture content of foods)

Total amount of non-sweetened water collected after the 24-hour recall and reported in the Total Nutrient Intake files. Minerals in tap water and plain bottled water not included.

 

Total amount of non-sweetened water collected after the 24-hour recall and reported in the Total Nutrient Intake files. Minerals in tap water and plain bottled water not included.

All waters, including tap water and bottled water, were collected during the 24-hour recall and reported in the Individual Foods file, complete with food codes, gram weights and nutrient values. Summary water variables compatible with previous data cycles are included in the Total Nutrient Intake files with the exception of plain carbonated water.

Number of intakes that include only water consumption for the day

1 intake, no records in Individual Foods file

3 intakes (1 intake in Day 1 and 2 intakes in Day 2 data), no records in Individual Foods file

3 intakes (1 intake in Day 1 and 2 intakes in Day 2 data), records are included in Individual Foods file

Eligible sample for questions on fish/ shellfish consumptions in the past 30 days

Children 1-5 years and women 16-49 years of age.

Children 1-5 years and women 16-49 years of age.

All examinees one year or older.

Appendix 2. Variables in the Individual Foods Files (DR1IFF_D and DR2IFF_D) by Position

Variables in the Individual Foods Files (DR1IFF_D and DR2IFF_D) by Position

Day 1 Name     

Day 2 Name

Variable Label

SEQN              

SEQN

Respondent sequence number

DR1ILINE

DR2ILINE

Food/Individual component number

WTDRD1

WTDRD1

Dietary day one sample weight

WTDR2D

WTDR2D

Dietary two-day sample weight

DR1DRSTZ

DR2DRSTZ

Dietary recall status

DR1EXMER

DR2EXMER

Interviewer ID code

DRABF

DRABF

Breast-fed infant (either day)

DRDINT

DRDINT

Number of days of intake

DR1DAY

DR2DAY

Intake day of the week

DR1LANG

DR2LANG

Language respondent used mostly

DR1CCMNM

DR2CCMNM

Combination food number

DR1CCMTX

DR2CCMTX

Combination food type

DR1_020

DR2_020

Time of eating occasion (HH:MM)

DR1_030Z

DR2_030Z

Name of eating occasion

DR1FS

DR2FS

Source of food

DR1_040Z

DR2_040Z

Did you eat this meal at home?

DR1IFDCD

DR2IFDCD

USDA food code

DR1MC

DR2MC

Modification code

DR1IGRMS

DR2IGRMS

Grams

DR1IKCAL

DR2IKCAL

Energy (kcal)

DR1IPROT

DR2IPROT

Protein (gm)

DR1ICARB

DR2ICARB

Carbohydrate (gm)

DR1ISUGR

DR2ISUGR

Total sugars (gm)

DR1IFIBE

DR2IFIBE

Dietary fiber (gm)

DR1ITFAT

DR2ITFAT

Total fat (gm)

DR1ISFAT

DR2ISFAT

Total saturated fatty acids (gm)

DR1IMFAT

DR2IMFAT

Total monounsaturated fatty acids (gm)

DR1IPFAT

DR2IPFAT

Total polyunsaturated fatty acids (gm)

DR1ICHOL

DR2ICHOL

Cholesterol (mg)

DR1IATOC

DR2IATOC

Vitamin E as alpha-tocopherol (mg)

DR1IATOA

DR2IATOA

Added alpha-tocopherol (Vitamin E) (mg)

DR1IRET

DR2IRET

Retinol (mcg)

DR1IVARA

DR2IVARA

Vitamin A, RAE (mcg)

DR1IACAR

DR2IACAR

Alpha-carotene (mcg)

DR1IBCAR

DR2IBCAR

Beta-carotene (mcg)

DR1ICRYP

DR2ICRYP

Beta-cryptoxanthin (mcg)

DR1ILYCO

DR2ILYCO

Lycopene (mcg)

DR1ILZ

DR2ILZ

Lutein + zeaxanthin (mcg)

DR1IVB1

DR2IVB1

Thiamin (Vitamin B1) (mg)

DR1IVB2

DR2IVB2

Riboflavin (Vitamin B2) (mg)

DR1INIAC

DR2INIAC

Niacin (mg)

DR1IVB6

DR2IVB6

Vitamin B6 (mg)

DR1IFOLA

DR2IFOLA

Total folate (mcg)

DR1IFA

DR2IFA

Folic acid (mcg)

DR1IFF

DR2IFF

Food folate (mcg)

DR1IFDFE

DR2IFDFE

Folate, DFE (mcg)

DR1ICHL

DR2ICHL

Total choline (mg)

DR1IVB12

DR2IVB12

Vitamin B12 (mcg)

DR1IB12A

DR2IB12A

Added vitamin B12 (mcg)

DR1IVC

DR2IVC

Vitamin C (mg)

DR1IVK

DR2IVK

Vitamin K (mcg)

DR1ICALC

DR2ICALC

Calcium (mg)

DR1IPHOS

DR2IPHOS

Phosphorus (mg)

DR1IMAGN

DR2IMAGN

Magnesium (mg)

DR1IIRON

DR2IIRON

Iron (mg)

DR1IZINC

DR2IZINC

Zinc (mg)

DR1ICOPP

DR2ICOPP

Copper (mg)

DR1ISODI

DR2ISODI

Sodium (mg)

DR1IPOTA

DR2IPOTA

Potassium (mg)

DR1ISELE

DR2ISELE

Selenium (mcg)

DR1ICAFF

DR2ICAFF

Caffeine (mg)

DR1ITHEO

DR2ITHEO

Theobromine (mg)

DR1IALCO

DR2IALCO

Alcohol (gm)

DR1IMOIS

DR2IMOIS

Moisture (gm)

DR1IS040

DR2IS040

SFA 4:0 (Butanoic) (gm)

DR1IS060

DR2IS060

SFA 6:0 (Hexanoic) (gm)

DR1IS080

DR2IS080

SFA 8:0 (Octanoic) (gm)

DR1IS100

DR2IS100

SFA 10:0 (Decanoic) (gm)

DR1IS120

DR2IS120

SFA 12:0 (Dodecanoic) (gm)

DR1IS140

DR2IS140

SFA 14:0 (Tetradecanoic) (gm)

DR1IS160

DR2IS160

SFA 16:0 (Hexadecanoic) (gm)

DR1IS180

DR2IS180

SFA 18:0 (Octadecanoic) (gm)

DR1IM161

DR2IM161

MFA 16:1 (Hexadecenoic) (gm)

DR1IM181

DR2IM181

MFA 18:1 (Octadecenoic) (gm)

DR1IM201

DR2IM201

MFA 20:1 (Eicosenoic) (gm)

DR1IM221

DR2IM221

MFA 22:1 (Docosenoic) (gm)

DR1IP182

DR2IP182

PFA 18:2 (Octadecadienoic) (gm)

DR1IP183

DR2IP183

PFA 18:3 (Octadecatrienoic) (gm)

DR1IP184

DR2IP184

PFA 18:4 (Octadecatetraenoic) (gm)

DR1IP204

DR2IP204

PFA 20:4 (Eicosatetraenoic) (gm)

DR1IP205

DR2IP205

PFA 20:5 (Eicosapentaenoic) (gm)

DR1IP225

DR2IP225

PFA 22:5 (Docosapentaenoic) (gm)

DR1IP226

DR2IP226

PFA 22:6 (Docosahexaenoic) (gm)

 

 

Appendix 3. Adding Food Code Descriptions or Modification Code Descriptions to Your Files

Two technical support files are included with the Individual Foods files: the Food Code Description file (DRXFCD_D) and the Modification Code Description file (DRXMCD_D).

The DRXFCD_D file includes abbreviated descriptions (up to 60 characters) and complete descriptions (up to 200 characters) associated with each USDA food code identified in the Individual Foods files. The DRXMCD_D file includes descriptions associated with each modification code identified in the Individual Foods files.

The Food Code Description file (DRXFCD_D) contains three variables:

DRDIFDCD a numeric value corresponding to DR1IFDCD in the file
DR1IFF_D or DR2IFDCD in the file DR2IFF_D;
DRXFCSD a short description (up to 60 characters) of the food code.
DRXFCLD a long description (up to 200 characters) of the food code.

The Modification Code Description file (DRXMCD_D) contains two variables:

DRDMC a numeric value corresponding to DR1MC in the file DR1IFF_D or
DR2MC in the file DR2IFF_D;
DRMCD a description (up to 200 characters) of the modification code.

The following SQL code is an example of appending the modifications code description (here called DR1MCD) to one of the Individual Foods files. This code is for SAS® Proc SQL. Other SQL implementations may be different. This same technique may be used for the Food Code Description file as well.

create table dr1iff_d_plus as
select a.*,b.drxmcd as dr1mcd
from nhanes.dr1iff_d a
left join
nhanes.drxmcd_d b
on a.dr1mc = b.drxmc
order by seqn , dr1iline;

SAS® users may wish to use Proc Format to assign labels to the food codes or to the modification codes. The following example assigns a permanent format to the food code based on the short description. It is assumed that the user has stored the Individual Foods files and the Food Code Description file in a library called NHANES and wishes to store the formats there as well.

Options FmtSearch = (NHANES);

Data DRXFMT;
Set NHANES.DRXFCD_D;
Retain FMTNAME 'DRIFDCD';
Rename DRDIFDCD = Start;
Rename DRXFCSD = Value;
Drop DRXFCLD; Run;

Proc Format CntlIn= DRXFMT
Library=NHANES;
Run;

Proc DataSets Lib=NHANES;
Modify DR1IFFC;
Format DR1IFDCD DRDIFDCD.;
Modify DR2IFFC;
Format DR2IFDCD DRDIFDCD.;
Quit;

SAS® is a registered trademark of SAS Institute, Inc.

Appendix 4. List of Nutrients/Food Components (Unit)

Energy and Macronutrients

Food energy (kcal)
Protein (g)
Carbohydrate (g)
Fat, total (g)
Alcohol (g)

Sugars, total (g)
Dietary fiber, total (g)
Water (moisture) (g)*

Saturated fatty acids, total (g)
Monounsaturated fatty acids, total (g)
Polyunsaturated fatty acids, total (g)
Cholesterol (mg)

Individual fatty acids:
4:0 (g)
6:0 (g)
8:0 (g)
10:0 (g)
12:0 (g)
14:0 (g)
16:0 (g)
18:0 (g)
16:1 (g)
18:1 (g)
20:1 (g)
22:1 (g)
18:2 (g)
18:3 (g)
18:4 (g)
20:4 (g)
20:5 n-3 (g)
22:5 n-3 (g)
22:6 n-3 (g)

Vitamins, Minerals, and Other Components

Vitamin A as retinol activity equivalents (µg)
Retinol (µg)

Carotenoids:
Carotene, alpha (µg)
Carotene, beta (µg)
Cryptoxanthin, beta (µg)
Lycopene (µg)
Lutein + zeaxanthin (µg)

Vitamin E as alpha-tocopherol (mg)
Added vitamin E as alpha-tocopherol (mg)
Vitamin K as phylloquinone (µg)
Vitamin C (mg)
Thiamin (mg)
Riboflavin (mg)
Niacin (mg)
Vitamin B-6 (mg)
Folate, total (µg)
Folate as dietary folate equivalents (µg)
Folic acid (µg)
Food folate (µg)
Choline, total (mg)
Vitamin B-12 (µg)
Added vitamin B-12 (µg)

Calcium (mg)
Iron (mg)
Magnesium (mg)
Phosphorus (mg)
Potassium (mg)
Sodium (mg)
Zinc (mg)
Copper (mg)
Selenium (µg)
Caffeine (mg)
Theobromine (mg)

* Value reflects moisture present in all foods, beverages, and water consumed as a beverage (variables DR1IMOIS, DR2IMOIS, DR1TMOIS, DR2TMOIS)

Appendix 5. Variables in the Total Nutrient Intakes Files (DR1TOT_D and DR2TOT_D) by Position

Variables in the Total Nutrient Intakes Files (DR1TOT_D and DR2TOT_D) by Position

Day 1 Name

Day 2 Name

Variable Label

SEQN

SEQN

Respondent sequence number

WTDRD1

WTDRD1

Dietary day one sample weight

WTDR2D

WTDR2D

Dietary two-day sample weight

DR1DRSTZ

DR2DRSTZ

Dietary recall status

DR1EXMER

DR2EXMER

Interviewer ID code

DRABF

DRABF

Breast-fed infant (either day)

DRDINT

DRDINT

Number of days of intake

DR1DAY

DR2DAY

Intake day of the week

DR1LANG

DR2LANG

Language respondent used mostly

DR1MNRSP

DR2MNRSP

Main respondent for this interview

DR1HELPD

DR2HELPD

Helped in responding for this interview

DBQ095Z

N/A

Type of table salt used

DBD100

N/A

How often add salt to food at table

DRQSPREP

N/A

Salt used in preparation?

DRQSDIET

N/A

On special diet?

DRQSDT1

N/A

Weight loss/Low cal/Low carb/Hi pro diet

DRQSDT2

N/A

Low fat/Low cholesterol diet

DRQSDT3

N/A

Low salt/Low sodium diet

DRQSDT4

N/A

Sugar free/Low sugar diet

DRQSDT5

N/A

Low fiber diet

DRQSDT6

N/A

High fiber diet

DRQSDT7

N/A

Diabetic diet

DRQSDT8

N/A

Weight gain/Muscle building diet

DRQSDT91

N/A

Other special diet

DR1TNUMF

DR2TNUMF

Number of foods reported

DR1TKCAL

DR2TKCAL

Energy (kcal)

DR1TPROT

DR2TPROT

Protein (gm)

DR1TCARB

DR2TCARB

Carbohydrate (gm)

DR1TSUGR

DR2TSUGR

Total sugars (gm)

DR1TFIBE

DR2TFIBE

Dietary fiber (gm)

DR1TTFAT

DR2TTFAT

Total fat (gm)

DR1TSFAT

DR2TSFAT

Total saturated fatty acids (gm)

DR1TMFAT

DR2TMFAT

Total monounsaturated fatty acids (gm)

DR1TPFAT

DR2TPFAT

Total polyunsaturated fatty acids (gm)

DR1TCHOL

DR2TCHOL

Cholesterol (mg)

DR1TATOC

DR2TATOC

Vitamin E as alpha-tocopherol (mg)

DR1TATOA

DR2TATOA

Added alpha-tocopherol (Vitamin E) (mg)

DR1TRET

DR2TRET

Retinol (mcg)

DR1TVARA

DR2TVARA

Vitamin A, RAE (mcg)

DR1TACAR

DR2TACAR

Alpha-carotene (mcg)

DR1TBCAR

DR2TBCAR

Beta-carotene (mcg)

DR1TCRYP

DR2TCRYP

Beta-cryptoxanthin (mcg)

DR1TLYCO

DR2TLYCO

Lycopene (mcg)

DR1TLZ

DR2TLZ

Lutein + zeaxanthin (mcg)

DR1TVB1

DR2TVB1

Thiamin (Vitamin B1) (mg)

DR1TVB2

DR2TVB2

Riboflavin (Vitamin B2) (mg)

DR1TNIAC

DR2TNIAC

Niacin (mg)

DR1TVB6

DR2TVB6

Vitamin B6 (mg)

DR1TFOLA

DR2TFOLA

Total folate (mcg)

DR1TFA

DR2TFA

Folic acid (mcg)

DR1TFF

DR2TFF

Food folate (mcg)

DR1TFDFE

DR2TFDFE

Folate, DFE (mcg)

DR1TCHL

DR2TCHL

Total choline (mg)

DR1TVB12

DR2TVB12

Vitamin B12 (mcg)

DR1TB12A

DR2TB12A

Added vitamin B12 (mcg)

DR1TVC

DR2TVC

Vitamin C (mg)

DR1TVK

DR2TVK

Vitamin K (mcg)

DR1TCALC

DR2TCALC

Calcium (mg)

DR1TPHOS

DR2TPHOS

Phosphorus (mg)

DR1TMAGN

DR2TMAGN

Magnesium (mg)

DR1TIRON

DR2TIRON

Iron (mg)

DR1TZINC

DR2TZINC

Zinc (mg)

DR1TCOPP

DR2TCOPP

Copper (mg)

DR1TSODI

DR2TSODI

Sodium (mg)

DR1TPOTA

DR2TPOTA

Potassium (mg)

DR1TSELE

DR2TSELE

Selenium (mcg)

DR1TCAFF

DR2TCAFF

Caffeine (mg)

DR1TTHEO

DR2TTHEO

Theobromine (mg)

DR1TALCO

DR2TALCO

Alcohol (gm)

DR1TMOIS

DR2TMOIS

Moisture (gm)

DR1TS040

DR2TS040

SFA 4:0 (Butanoic) (gm)

DR1TS060

DR2TS060

SFA 6:0 (Hexanoic) (gm)

DR1TS080

DR2TS080

SFA 8:0 (Octanoic) (gm)

DR1TS100

DR2TS100

SFA 10:0 (Decanoic) (gm)

DR1TS120

DR2TS120

SFA 12:0 (Dodecanoic) (gm)

DR1TS140

DR2TS140

SFA 14:0 (Tetradecanoic) (gm)

DR1TS160

DR2TS160

SFA 16:0 (Hexadecanoic) (gm)

DR1TS180

DR2TS180

SFA 18:0 (Octadecanoic) (gm)

DR1TM161

DR2TM161

MFA 16:1 (Hexadecenoic) (gm)

DR1TM181

DR2TM181

MFA 18:1 (Octadecenoic) (gm)

DR1TM201

DR2TM201

MFA 20:1 (Eicosenoic) (gm)

DR1TM221

DR2TM221

MFA 22:1 (Docosenoic) (gm)

DR1TP182

DR2TP182

PFA 18:2 (Octadecadienoic) (gm)

DR1TP183

DR2TP183

PFA 18:3 (Octadecatrienoic) (gm)

DR1TP184

DR2TP184

PFA 18:4 (Octadecatetraenoic) (gm)

DR1TP204

DR2TP204

PFA 20:4 (Eicosatetraenoic) (gm)

DR1TP205

DR2TP205

PFA 20:5 (Eicosapentaenoic) (gm)

DR1TP225

DR2TP225

PFA 22:5 (Docosapentaenoic) (gm)

DR1TP226

DR2TP226

PFA 22:6 (Docosahexaenoic) (gm)

DR1_300

DR2_300

Compare food consumed yesterday to usual

DR1_320Z

DR2_320Z

Total plain water drank yesterday (gm)

DR1_330Z

DR2_330Z

Total tap water drank yesterday (gm)

DR1BWATZ

DR2BWATZ

Total bottled water drank yesterday (gm)

DR1TWS

DR2TWS

Tap water source

DRD340

N/A

Shellfish eaten during past 30 days

DRD350A

N/A

Clams eaten during past 30 days

DRD350AQ

N/A

# of times clams eaten in past 30 days

DRD350B

N/A

Crabs eaten during past 30 days

DRD350BQ

N/A

# of times crabs eaten in past 30 days

DRD350C

N/A

Crayfish eaten during past 30 days

DRD350CQ

N/A

# of times crayfish eaten past 30 days

DRD350D

N/A

Lobsters eaten during past 30 days

DRD350DQ

N/A

# of times lobsters eaten past 30 days

DRD350E

N/A

Mussels eaten during past 30 days

DRD350EQ

N/A

# of times mussels eaten in past 30 days

DRD350F

N/A

Oysters eaten during past 30 days

DRD350FQ

N/A

# of times oysters eaten in past 30 days

DRD350G

N/A

Scallops eaten during past 30 days

DRD350GQ

N/A

# of times scallops eaten past 30 days

DRD350H

N/A

Shrimp eaten during past 30 days

DRD350HQ

N/A

# of times shrimp eaten in past 30 days

DRD350I

N/A

Other shellfish eaten past 30 days

DRD350IQ

N/A

# of times other shellfish eaten

DRD350J

N/A

Other unknown shellfish eaten past 30 days

DRD350JQ

N/A

# of times other unknown shellfish eaten

DRD350K

N/A

Refused on shellfish eaten past 30 days

DRD360

N/A

Fish eaten during past 30 days

DRD370A

N/A

Breaded fish products eaten past 30 days

DRD370AQ

N/A

# of times breaded fish products eaten

DRD370B

N/A

Tuna eaten during past 30 days

DRD370BQ

N/A

# of times tuna eaten in past 30 days

DRD370C

N/A

Bass eaten during past 30 days

DRD370CQ

N/A

# of times bass eaten in past 30 days

DRD370D

N/A

Catfish eaten during past 30 days

DRD370DQ

N/A

# of times catfish eaten in past 30 days

DRD370E

N/A

Cod eaten during past 30 days

DRD370EQ

N/A

# of times cod eaten in past 30 days

DRD370F

N/A

Flatfish eaten during past 30 days

DRD370FQ

N/A

# of times flatfish eaten past 30 days

DRD370G

N/A

Haddock eaten during past 30 days

DRD370GQ

N/A

# of times haddock eaten in past 30 days

DRD370H

N/A

Mackerel eaten during past 30 days

DRD370HQ

N/A

# of times mackerel eaten past 30 days

DRD370I

N/A

Perch eaten during past 30 days

DRD370IQ

N/A

# of times perch eaten in past 30 days

DRD370J

N/A

Pike eaten during past 30 days

DRD370JQ

N/A

# of times pike eaten in past 30 days

DRD370K

N/A

Pollock eaten during past 30 days

DRD370KQ

N/A

# of times pollock eaten in past 30 days

DRD370L

N/A

Porgy eaten during past 30 days

DRD370LQ

N/A

# of times porgy eaten in past 30 days

DRD370M

N/A

Salmon eaten during past 30 days

DRD370MQ

N/A

# of times salmon eaten in past 30 days

DRD370N

N/A

Sardines eaten during past 30 days

DRD370NQ

N/A

# of times sardines eaten past 30 days

DRD370O

N/A

Sea bass eaten during past 30 days

DRD370OQ

N/A

# of times sea bass eaten past 30 days

DRD370P

N/A

Shark eaten during past 30 days

DRD370PQ

N/A

# of times shark eaten in past 30 days

DRD370Q

N/A

Swordfish eaten during past 30 days

DRD370QQ

N/A

# of times swordfish eaten past 30 days

DRD370R

N/A

Trout eaten during past 30 days

DRD370RQ

N/A

# of times trout eaten in past 30 days

DRD370S

N/A

Walleye eaten during past 30 days

DRD370SQ

N/A

# of times walleye eaten in past 30 days

DRD370T

N/A

Other fish eaten during past 30 days

DRD370TQ

N/A

# of times other fish eaten past 30 days

DRD370U

N/A

Other unknown fish eaten in past 30 days

DRD370UQ

N/A

# of times other unknown fish eaten

DRD370V

N/A

Refused on fish eaten past 30 days