Component Description
The Health Insurance questionnaire (variable name prefix HIQ) provides respondent-level interview data on insurance coverage.
Eligible Sample
All participants were eligible.
Interview Setting and Mode of Administration
These questions were asked, in the home or by telephone, by trained interviewers using the Computer-Assisted Personal Interview (CAPI) system. A proxy provided information for survey participants who were under 16 years of age and for individuals who could not answer the questions themselves. The respondent selected the language of interview (English or Spanish) or requested that an interpreter be used.
The questionnaire and information about the interview procedures are available on the NHANES website.
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.
After collection, interview data were reviewed by the NHANES field office staff for accuracy and completeness of selected items. The interviewers were required to audio-record interviews and the recorded interviews were reviewed by NCHS staff and interviewer supervisors.
Data Processing and Editing
The data were reviewed for completeness, consistency, and illogical values. To reduce the risk of disclosure, the response “Indian Health Services” for kind of health care coverage was recoded to “Other Government Program”.
Analytic Notes
Since the questionnaire was asked during the household interview, the interview sample weights should be used in the analysis. However, if the data is joined with data from the Mobile Exam Center (MEC), the MEC sample weights should be used. Please refer to the Analytic Guidelines and the NHANES Tutorials for the use of sample weights and other analytic issues.