Am J Epidemiol 2003; 158:272-279.
Copyright © 2003 by Johns
Hopkins Bloomberg School of Public Health
PRACTICE OF EPIDEMIOLOGY |
Population- and Community-based Recruitment of African Americans and Latinos
The San Francisco Bay Area Lung Cancer Study
1 Northern California Cancer Center, Union City, CA.
2 Center for Aging in Diverse Communities, Medical Effectiveness Research Center for Diverse Populations, Division of General Internal Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA.
3 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA.
4 Biostatistics Core, University of California San Francisco Cancer Center, San Francisco, CA.
Empiric data on recruitment of minorities into clinical or population studies are limited. The authors evaluated population- and community-based recruitment methods in a 19982001 case-control study of lung cancer among African Americans and Latinos. For lung cancer cases in the San Francisco Bay Area of California, rapid case ascertainment by the tumor registry combined with telephone screening identified 470 (9%) African Americans and 262 (5%) Latinos. When random digit dialing (RDD) and Health Care Financing Administration (HCFA) records failed to yield adequate numbers of controls in appropriate age-gender-ethnicity groups, community-based recruitment methods were used. Demographic characteristics and behavioral and occupational risk factors for controls, by recruitment method, were compared with those for lung cancer cases to evaluate potential bias. The average numbers of hours spent per control recruited were 18.6 for RDD, 11.4 for HCFA, and less than 1 for the community-based methods. The prevalence of smoking-related lung cancer risk factors was significantly higher among African-American community-based controls than for those identified through RDD (p < 0.005). Compared with HCFA controls, Latino RDD controls reported significantly higher cumulative smoking exposure (p < 0.05). Further assessment of strategies for successful recruitment of minority participants into epidemiologic studies is warranted.
case-control studies; epidemiologic methods; ethnic groups; investigative techniques
Abbreviations: Abbreviations: HCFA, Health Care Financing Administration; RDD, random digit dialing.
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