BRFSS: Behavioral Risk Factor Surveillance System Survey
Recent use of mammography defined by self-report receipt of a mammogram within the past two years (BRFSS, 2006) or health insurance claim for mammography in two-year period (Medicare, 2004–2005).
In BRFSS analysis, odds ratios were adjusted for age, race, marital status, educational attainment, household income, health insurance, regular source of health care and check-up in the past 2 years. In Medicare analysis, odds ratios were adjusted for age, race, comorbidity and primary care visit during the two-year study period.
All BRFSS estimates were weighted to account for the probability of sample selection and for post-stratification adjustment for non-response and non-coverage of households without telephones.