Table of Contents

Locator Record

Title: NHANES/NNYFS Combined Sample 2012 - Diet Behavior & Nutrition (C_DBQ )
Contact Number: 1-866-441-NCHS
Years of Content: 2012
First Published: February , 2015
Revised: NA
Access Constraints: RDC Only
Use Constraints: RDC Only
Geographic Coverage: National
Subject: The DBQ section provides personal interview data on various dietary behavior and nutrition related topics, including school meal program participation, meals prepared away from home, fast food meals, use of convenience foods, etc.
Record Source: NHANES/NNYFS 2012
Survey Methodology: This is a stratified multistage probability sample of the non-institutionalized population aged 3 to 15 years in the U.S. from NHANES 2012 and NNYFS 2012.
Medium: NHANES Web site; SAS transport files

Component Description

This file provides data from the diet behavior and nutrition (variable name prefix DBQ) section for the combined samples from NHANES 2012 and the NHANES National Youth Fitness Survey (NNYFS).

This section provides personal interview data on various dietary behavior and nutrition related topics. Topics included in the section are:

This dataset can only be accessed through the NCHS Research Data Center (RDC). Instructions for requesting use of these data are available at the RDC website (http://www.cdc.gov/rdc/).

Eligible Sample

The target age groups for questions in this section vary by the topic. For example, the questions pertaining to school meal program participation were asked for children and adolescents aged 4 to 15 years; and the use of convenience foods questions were asked for all participants one year of age and older. Please review the questionnaire and codebook carefully. Frequency counts were verified during the preparation of the file.

Interview Setting and Mode of Administration

These questions were asked, in the home, by trained interviewers using the Computer-Assisted Personal Interviewing (CAPI) system. A proxy provided information for all survey participants.

Hand cards showing response categories were also used for some questions. When necessary, the interviewers read the hand cards to respondents.

Quality Assurance & Quality Control

The CAPI system is programmed with built-in consistency checks to reduce data entry errors. CAPI also uses online help screens to assist interviewers in defining key terms used in the questionnaire. All of the data was reviewed by the NHANES field office staff for accuracy and completeness.

Data Processing and Editing

Frequency counts were checked, "skip" patterns were verified, and the reasonableness of question responses was reviewed. Edits were made to some variables to ensure the completeness, consistency, and analytic usefulness of the data. Edits were also made, when necessary, to address data disclosure concerns. When a variable was modified globally, as part of the editing process, the third letter in the variable name was changed from a Q (i.e., DBQ) to a D (i.e., DBD). For example, some data were collected using two variables (a number variable and a unit of measure variable), but combined into a single variable for data release purposes.

DBD895 (Frequency of getting meals prepared away from home)
Respondents were asked how many times they had gotten meals that were prepared away from home in the past 7 days. If the frequency was reported as "never," the value was re-coded as zero. If the frequency was reported more than 21 times per week, the value was re-coded as "5555".

DBD900 (Frequency of getting meals from fast food or pizza places)
Respondents were asked how many times they had gotten meals from fast food or pizza places in the past 7 days. If the frequency was reported as "never," the value was re-coded as zero. If the frequency was reported more than 21 times per week, the value was re-coded as "5555".

DBD905 and DBD910 (Use of convenience foods)

This information was collected using two-part (number and unit) questions to allow respondents to report the frequency of interest as either per day, per week, or per month. The released variables were edited to standardize the reported frequency to number of times in the last 30 days. If the frequency was reported as "never", the value was re-coded as zero.

Analytic Notes

Although this data was collected as part of the household questionnaire, if it is merged with the exam data, exam sample weights should be used for the analyses.

 

Please refer to the NNYFS Analytic Guidelines for further details on the use of sample weights and other analytic issues.

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 3 YEARS - 15 YEARS

DBQ360 - Attend kindergarten thru high school

Variable Name:
DBQ360
SAS Label:
Attend kindergarten thru high school
English Text:
During the school year, {do you/does SP} attend a kindergarten, grade school, junior or high school?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2426 2426
2 No 250 2676 DBD895
7 Refused 0 2676 DBD895
9 Don't know 0 2676 DBD895
. Missing 217 2893

DBQ370 - School serves school lunches

Variable Name:
DBQ370
SAS Label:
School serves school lunches
English Text:
Does {your/SP's} school serve school lunches? These are complete lunches that cost the same every day.
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2316 2316
2 No 108 2424 DBQ400
7 Refused 0 2424 DBQ400
9 Don't know 2 2426 DBQ400
. Missing 467 2893

DBD381 - # of times/week get school lunch

Variable Name:
DBD381
SAS Label:
# of times/week get school lunch
English Text:
During the school year, about how many times a week {do you/does SP} usually get a complete school lunch?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 5 Range of Values 1937 1937
0 None 373 2310 DBQ400
7777 Refused 0 2310 DBQ400
9999 Don't know 6 2316 DBQ400
. Missing 577 2893

DBQ390 - School lunch free, reduced or full price

Variable Name:
DBQ390
SAS Label:
School lunch free, reduced or full price
English Text:
{Do you/Does SP} get these lunches free, at a reduced price, or {do you/does he/she} pay full price?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Free 1185 1185
2 Reduced price 166 1351
3 Full price 585 1936
7 Refused 0 1936
9 Don't know 1 1937
. Missing 956 2893

DBQ400 - School serve complete breakfast each day

Variable Name:
DBQ400
SAS Label:
School serve complete breakfast each day
English Text:
Does {your/SP's} school serve a complete breakfast that costs the same every day?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2058 2058
2 No 352 2410 DBD895
7 Refused 0 2410 DBD895
9 Don't know 16 2426 DBD895
. Missing 467 2893

DBD411 - # of times/week get school breakfast

Variable Name:
DBD411
SAS Label:
# of times/week get school breakfast
English Text:
During the school year, about how many times a week {do you/does SP} usually get a complete breakfast at school?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 5 Range of Values 1038 1038
0 None 1011 2049 DBD895
7777 Refused 0 2049 DBD895
9999 Don't know 9 2058 DBD895
. Missing 835 2893

DBQ421 - School breakfast free/reduced/full price

Variable Name:
DBQ421
SAS Label:
School breakfast free/reduced/full price
English Text:
{Do you/Does SP} get these breakfasts free, at a reduced price, or {do you/does he/she} pay full price?
Target:
Both males and females 4 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Free 843 843
2 Reduced price 80 923
3 Full price 114 1037
7 Refused 0 1037
9 Don't know 1 1038
. Missing 1855 2893

DBD895 - # of meals not home prepared

Variable Name:
DBD895
SAS Label:
# of meals not home prepared
English Text:
Next I'm going to ask you about meals. By meal, I mean breakfast, lunch and dinner. During the past 7 days, how many meals {did you/did SP} get that were prepared away from home in places such as restaurants, fast food places, food stands, grocery stores, or from vending machines? {Please do not include meals provided as part of the school lunch or school breakfast./Please do not include meals provided as part of the community programs you reported earlier.}
English Instructions:
CAPI INSTRUCTION: IF DBQ381G = 1 OR DBQ.411G = 1, DISPLAY {Please do not include meals provided as part of the school lunch or school breakfast.} IF DBQ.301 = 1 OR DBQ.330 = 1, DISPLAY {Please do not include meals provided as part of the community programs you reported earlier.} SOFT EDIT: DISPLAY A MESSAGE FOR ENTRY LARGER THAN "21." - "Unusually large number entered - Please verify - this is more than 3 meals per day, each day during the past 7 days."
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 21 Range of Values 2062 2062
0 None 788 2850 DBD905
5555 More than 21 0 2850
7777 Refused 0 2850 DBD905
9999 Dont Know 10 2860 DBD905
. Missing 33 2893

DBD900 - # of meals from fast food or pizza place

Variable Name:
DBD900
SAS Label:
# of meals from fast food or pizza place
English Text:
How many of those meals {did you/did SP} get from a fast-food or pizza place?
English Instructions:
CAPI INSTRUCTION: HARD EDIT NUMBER OF MEALS ENTERED IN DBQ.900 MUST BE EQUAL TO OR LESS THAN NUMBER ENTERED IN DBQ.895. IF NOT, DISPLAY THE FOLLOWING: "THE NUMBER OF MEALS FROM A FAST FOOD OR PIZZA PLACE CANNOT BE GREATER THAN NUMBER OF MEALS PREPARED AWAY FROM HOME."
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 14 Range of Values 1669 1669
0 None 393 2062
5555 More than 21 0 2062
7777 Refused 0 2062
9999 Don't know 0 2062
. Missing 831 2893

DBD905 - # of ready-to-eat foods in past 30 days

Variable Name:
DBD905
SAS Label:
# of ready-to-eat foods in past 30 days
English Text:
Some grocery stores sell "ready to eat" foods such as salads, soups, chicken, sandwiches and cooked vegetables in their salad bars and deli counters. During the past 30 days, how often did {you/SP} eat "ready to eat" foods from the grocery store? Please do not include sliced meat or cheese you buy for sandwiches and frozen or canned foods.
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 150 Range of Values 626 626
0 Never 2222 2848
7777 Refused 0 2848
9999 Don't know 6 2854
. Missing 39 2893

DBD910 - # of frozen meals/pizza in past 30 days

Variable Name:
DBD910
SAS Label:
# of frozen meals/pizza in past 30 days
English Text:
During the past 30 days, how often did you {SP} eat frozen meals or frozen pizzas? Here are some examples of frozen meals and frozen pizzas.
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 150 Range of Values 1342 1342
0 Never 1512 2854
7777 Refused 0 2854
9999 Don't know 2 2856
. Missing 37 2893