National Health and Nutrition Examination Survey and National Youth Fitness Survey

NHANES/NYFS 2012 Data Documentation, Codebook, and Frequencies

NHANES/NNYFS Combined Sample 2012 - Diabetes (C_DIQ)

Data File: C_DIQ.xpt

First Published: September, 2013

Last Revised: NA

Locator Record

Title: NHANES/NNYFS Combined Sample 2012 - Diabetes (C_DIQ )
Contact Number: 1-866-441-NCHS
Years of Content: 2012
First Published: September, 2013
Revised: NA
Access Constraints: RDC Only
Use Constraints: RDC Only
Geographic Coverage: National
Subject: Diabetes questionnaire focused on self-reported diabetes, prediabetes, use of insulin, and use of oral hypoglycemic agents from the combined NHANES/NNYFS 2012.
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

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.

References

N/A.

Codebook and Frequencies