Percentages are weighted to population characteristics. Data are not available if it did not meet BRFSS stability requirements. For more information on these requirements, as well as risk factors and calculated variables, see the Technical Documents and Survey Data for a specific year - http://www.cdc.gov/brfss/annual_data/annual_data.htm. Recommended citation: Centers for Disease Control and Prevention (CDC). Behavioral Risk Factor Surveillance System. Atlanta, Georgia: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, [appropriate year].
Access the survey data and documentation for any BRFSS survey year. The documentation provides technical and statistical information regarding the BRFSS, such as comparability, sample information, and more. For the corresponding annual questionnaires, see the Questionnaires section of this site. For other data sets, see the SMART and BRFSS Maps (GIS) sections of this site.