National Health and Nutrition Examination Survey and National Youth Fitness Survey

2012-2012 Data Documentation, Codebook, and Frequencies

NHANES/NNYFS Combined Sample 2012 - Diabetes (C_DIQ)

RDC Only Data File: C_DIQ.xpt

First Published: September 2013

Last Revised: NA

Due to disclosure issues, this dataset is not available publicly. Access may be obtained through the NCHS Research Data Center (https://www.cdc.gov/rdc).

Component Description

The diabetes section (variable prefix name DIQ) provides personal interview data on diabetes, prediabetes, and the use of insulin or oral hypoglycemic medications. These questions were asked in the NHANES National Youth Fitness Study (NNYFS) and of NHANES participants aged 3 to 15 years, during the second year of the 2011-2012 NHANES cycle.

Eligible Sample

All survey participants aged 3 to 15 years were eligible. Please refer to check items in the diabetes questionnaire and corresponding codebook for question-specific details about the eligible target group.

Interview Setting and Mode of Administration

These questions were asked, in the home, by trained interviewers using the Computer-Assisted Personal Interviewing (CAPI) system. Hand cards showing response categories were also used for some questions. When necessary, household interviewers read the hand cards to respondents. A proxy provided information for survey participants.

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.

Data Processing and Editing

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.

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.

Analytic Notes

The analysis of combined NNYFS and NHANES diabetes questionnaire data must be conducted using the appropriate survey design variables, sample weights, and the basic demographic variables. Although this data was collected as the 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 Analytic Guidelines for further details on the use of sample weights and other analytic issues.

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

DIQ010 - Doctor told you have diabetes

Variable Name:: DIQ010
SAS Label:: Doctor told you have diabetes
English Text:: Has SP ever been told by a doctor or health professional that he/she has diabetes or sugar diabetes?
Target:: Both males and females 3 YEARS - 15 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	4	4
2	No	2881	2885	DIQ159
3	Borderline	7	2892	DIQ159
7	Refused	0	2892	DIQ159
9	Don't know	1	2893	DIQ159
.	Missing	0	2893

DID040 - Age when first told you had diabetes

Variable Name:: DID040
SAS Label:: Age when first told you had diabetes
English Text:: How old was SP when a doctor or other health professional first told {him/her} that {he/she} had diabetes or sugar diabetes?
English Instructions:: ENTER AGE IN YEARS.
Target:: Both males and females 3 YEARS - 15 YEARS

Code or Value	Value Description	Count	Cumulative
11	11	1	1
12	12	2	3
666	Less than 1 year	1	4
777	Refused	0	4
999	Don't know	0	4
.	Missing	2889	2893

DIQ159 - CHECK ITEM

Variable Name:: DIQ159
English Instructions:: IF AGE < 12 OR DIQ010 = 1 (YES) OR DIQ010 = 3, GO TO DIQ050. OTHERWISE, CONTINUE.
Target:: Both males and females 3 YEARS - 15 YEARS

DIQ160 - Ever told you have prediabetes

Variable Name:: DIQ160
SAS Label:: Ever told you have prediabetes
English Text:: Has SP ever been told by a doctor or other health professional that he/she has any of the following: prediabetes, impaired fasting glucose, impaired glucose tolerance, borderline diabetes or that {your/her/his} blood sugar is higher than normal but not high enough to be called diabetes or sugar diabetes?
English Instructions:: CAPI INSTRUCTION: HELP SCREEN: PREDIABETES, IMPAIRED FASTING GLUCOSE, IMPAIRED GLUCOSE TOLERANCE, OR BORDERLINE DIABETES OCCURS WHEN BLOOD SUGAR (GLUCOSE) LEVELS ARE HIGHER THAN NORMAL BUT NOT HIGH ENOUGH TO BE DIABETES. HAND CARD DIQ1.
Target:: Both males and females 12 YEARS - 15 YEARS

Code or Value	Value Description	Count	Cumulative
1	Yes	7	7
2	No	807	814
7	Refused	0	814
9	Don't know	0	814
.	Missing	2079	2893

DIQ050 - Taking insulin now

Variable Name:: DIQ050
SAS Label:: Taking insulin now
English Text:: Is SP now taking insulin
Target:: Both males and females 3 YEARS - 15 YEARS

Code or Value	Value Description	Count	Cumulative
1	Yes	3	3
2	No	2890	2893
7	Refused	0	2893
9	Don't know	0	2893
.	Missing	0	2893

DIQ065 - CHECK ITEM

Variable Name:: DIQ065
English Instructions:: IF DIQ010 = 1 (YES) OR DIQ160 = 1 (YES) OR DIQ010 = 3, CONTINUE. OTHERWISE, GO TO END OF SECTION.
Target:: Both males and females 3 YEARS - 15 YEARS

DIQ070 - Take diabetic pills to lower blood sugar

Variable Name:: DIQ070
SAS Label:: Take diabetic pills to lower blood sugar
English Text:: Is SP now taking diabetic pills to lower {his/her} blood sugar? These are sometimes called oral agents or oral hypoglycemic agents.
Target:: Both males and females 3 YEARS - 15 YEARS

Code or Value	Value Description	Count	Cumulative
1	Yes	1	1
2	No	17	18
7	Refused	0	18
9	Don't know	0	18
.	Missing	2875	2893

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