Expanded Behavioral Risk Factor Surveillance System (Expanded BRFSS)
The Expanded Risk Factor Surveillance System (Expanded BRFSS) augments the CDC Behavioral Risk Factor Surveillance System (BRFSS), which is conducted annually in New York state. Expanded BRFSS is a random-digit-dialed telephone survey among adults 18 years of age and older representative of the non-institutionalized civilian population with landline telephones living in New York state. The goal of Expanded BRFSS is to collect county-specific data on preventive health practices, risk behaviors, injuries and preventable chronic and infectious diseases. Topics assessed by the Expanded BRFSS include tobacco use, physical inactivity, diet, use of cancer screening services, and other factors linked to the leading causes of morbidity and mortality.
Survey data collection occurred in 58 geographic areas of New York State, including each of the 57 counties outside of New York City and New York City (5 counties) as a single area. A standard questionnaire was utilized in all areas. Data collection for the 2009 BRFSS took place during the period of July 2008 through June 2009. The goal was to complete about 650 interviews in each area. The final number of interviews varies because of the sampling design of the survey and differential response rates.
New York State conducted an Expanded BRFSS in 2003, utilizing a slightly different methodology. Representative information was collected in 38 county or county groups, comprised of the state's 62 counties. (Neighboring rural counties were grouped into logical planning areas in consultation with the New York State Association of County Health Officials.) A common set of core questions was asked in each of the 38 localities. Each locality was then allowed to select optional questions of particular interest to their respective area to complete their locality-specific questionnaire. About 630 interviews were conducted in each of the 38 areas.