Title of article
Compared to what? Finding controls for case-control studies
Author/Authors
David M Grimes، نويسنده , , Kenneth F Schulz، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
5
From page
1429
To page
1433
Abstract
Use of control (comparison) groups is a powerful research tool. In case-control studies, controls estimate the frequency of an exposure in the population under study. Controls can be taken from known or unknown study populations. A known group consists of
Journal title
The Lancet
Serial Year
2005
Journal title
The Lancet
Record number
587979
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