Review
doi: 10.1093/oxfordjournals.aje.a117069.
Invited commentary: ecologic studies--biases, misconceptions, and counterexamples
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- PMID: 8178788
- DOI: 10.1093/oxfordjournals.aje.a117069
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Review
Invited commentary: ecologic studies--biases, misconceptions, and counterexamples
Am J Epidemiol.
.
Abstract
Many authors have pointed out that relative-risk estimates derived from ecologic data are vulnerable to biases not found in estimates derived from individual-level data. Nevertheless, biases in ecologic studies still are often dealt with in the same manner as biases in other observational studies, and so are not given adequate treatment. This commentary reviews and illustrates some of the more recent findings about bias in ecologic estimates. Special attention is given to problems of ecologic confounder control when individual risks follow a nonlinear model, and to misconceptions about ecologic bias that have appeared in the literature.
Comment in
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Re: Ecologic studies--biases, misconceptions, and counterexamples.Am J Epidemiol. 1996 Mar 1;143(5):522-3. doi: 10.1093/oxfordjournals.aje.a008773. Am J Epidemiol. 1996. PMID: 8610668 No abstract available.
Comment on
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Invited commentary: in defense of ecologic studies for testing a linear-no threshold theory.Am J Epidemiol. 1994 Apr 15;139(8):765-8; discussion 769-71. doi: 10.1093/oxfordjournals.aje.a117071. Am J Epidemiol. 1994. PMID: 7710475 No abstract available.
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