Abstract #300028

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JSM 2003 Abstract #300028
Activity Number: 188
Type: Invited
Date/Time: Tuesday, August 5, 2003 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #300028
Title: Obtaining Cancer Risk Factor Prevalence Estimates in Small Areas
Author(s): Michael R. Elliott*+
Companies: University of Pennsylvania
Address: 615 Morris Lane, Wallingford, PA, 19086-6966,
Keywords: Calibration Estimation ; Small-Area Estimation ; Propensity Scores ; Cigarette Smoking ; NHIS ; BRFSS
Abstract:

Cancer surveillance research requires accurate estimates of risk factors at the small-area level. These risk factors are often obtained from surveys such as the National Health Interview Survey (NHIS), or the Behavioral Risk Factors Surveillance System (BRFSS). Unfortunately, no one population-based survey provides ideal prevalence estimates of such risk factors. One strategy is to combine information from multiple surveys, using the complementary strengths of one survey to compensate for the weaknesses of the other. The NHIS is a nationally representative, face-to-face survey with a high response rate; however, it cannot produce state or sub-state estimates of risk factor prevalence because of small sample size and lack of small-area identifiers. The BRFSS is a state-level telephone survey that excludes non-telephone households and has a lower response rate, but provides larger sample sizes and county identifiers. We discuss two model-assisted approaches that use NHIS data to construct either calibration-adjusted or propensity-score-adjusted BRFSS weights to produce small-area estimates of behavior risk factor prevalence at the U.S. county level.

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