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Re: Confounders and Coincidences
At 09:58 AM 5/8/03 -0400, BERNARD L COHEN wrote:
>On Wed, 7 May 2003, Carl Miller wrote:
>>> In a case-control study
> you can match cases to controls via ethnicity
>
> --You "can", but this is rarely done
>
> - you can not do this in an ecologic study such as your regardless of the
> sample size.
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May 8, 2003
You "can" easily handle obvious confounders in any approach. It is the
others that are not handled in "ecological" studies but are automatically
incorporated into the analysis in case-control and cohort studies by proper
selection, sample size, and statistical methodology.
I would appreciate hearing again from a professional biostatistician or
epidemiologist about this issue.
Otto
**********************************************
Prof. Otto G. Raabe, Ph.D., CHP
Center for Health & the Environment
(Street Address: Bldg. 3792, Old Davis Road)
University of California, Davis, CA 95616
E-Mail: ograabe@ucdavis.edu
Phone: (530) 752-7754 FAX: (530) 758-6140
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