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The Behavioral Risk Factor Surveillance System : comparability of data BRFSS 2018
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Description:Version #1—Revised: August 2019
The Behavioral Risk Factor Surveillance System (BRFSS) is an ongoing, state-based, random-digit– dialed telephone survey of noninstitutionalized adults 18 years of age or older, residing in the United States.1, 2 For detailed descriptions of the BRFSS questionnaires, data, and reports, please see the BRFSS website. In 2018, all 50 states, the District of Columbia (DC), Puerto Rico, and Guam conducted both household landline telephone and cell-phone interviews for the BRFSS data collection.
The BRFSS data collection, structure, and weighting methodology changed in 2011 to allow the addition of data collection by cell phones. The BRFSS survey uses disproportionate stratified sample (DSS) design for landline telephone samples and random sample design for the cell-phone survey. The BRFSS used iterative proportional fitting (IPF)—also known as raking—for weighting 2018 BRFSS data. Because of sample design and the multiple reporting areas, the BRFSS data showed some variation between states and territories for the 2018 data year. The following sections identify important similarities and variations for the 2018 data year from previous years.
compare-2018-508.pdf
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