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National Center for Chronic Disease Prevention and Health Promotion Behavioral Risk Factor Surveillance System BRFSS Home | Contact Us |
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Limited support is provided for a dual questionnaire data collection format. The dual questionnaire design consists of two questionnaires asked each month of the survey year. The core instrument must be asked without any changes in both versions of the questionnaire. The optional modules and state-added questions can be asked on either one or both versions, but must be asked throughout all twelve months of the survey. Two additional weights are provided for use with variables resulting from questions asked only on one of the two versions of the questionnaire.
To reduce confusion about which weight to use with which variable, two additional data sets are available for 2007. These data sets contain the data from the states which conducted dual questionnaires and used optional modules in 2007. For more information, please refer to the documentation below.
Use of BRFSS Dual Questionnaire Data
Please read this document before performing any data analyses.
This document contains a list of states that used the dual questionnaire and which modules they used.
1MB
2007 BRFSS Dual Questionnaire Version 1 Data (ASCII)
Data updated April 08, 20088MB 2007 BRFSS Dual Questionnaire Version 1 Data (SAS Transport Format)
Data updated April 08, 200812MB 2007 Variable Layout for Version 1 Data
Format information on variable name by column position.
DUALOUT07V1.sas file for Version 1 Data
SAS for Windows program to convert the ASCII file into a SAS dataset.
29K
2007 BRFSS Dual Questionnaire Version 2 Data (ASCII)
Data updated April 08, 20086MB 2007 BRFSS Dual Questionnaire Version 2 Data (SAS Transport Format)
Data updated April 08, 200810MB 2007 Variable Layout for Version 2 Data
Format information on variable name by column position.
Web PageDUALOUT07V2.sas file for Version 2 Data
SAS for Windows program to convert the ASCII file into a SAS dataset.
29K
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Available Survey Data
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Policies and Regulations | BRFSS Home | Contact Us Page last reviewed: 04/08/2008
United States Department of Health and Human Services |