Overcoming Ecologic Bias using the Two-Phase Study Design
نویسندگان
چکیده
منابع مشابه
Overcoming ecologic bias using the two-phase study design.
Ecologic (aggregate) data are widely available and widely utilized in epidemiologic studies. However, ecologic bias, which arises because aggregate data cannot characterize within-group variability in exposure and confounder variables, can only be removed by supplementing ecologic data with individual-level data. Here the authors describe the two-phase study design as a framework for achieving ...
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Ecologic (aggregate) data are widely available and widely utilized in epidemiologic studies. However, ecologic bias, which arises because aggregate data cannot characterize within-group variability in exposure and confounder variables, can only be removed by supplementing ecologic data with individual-level data. Here the authors describe the two-phase study design as a framework for achieving ...
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ژورنال
عنوان ژورنال: American Journal of Epidemiology
سال: 2008
ISSN: 0002-9262,1476-6256
DOI: 10.1093/aje/kwm386