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Epidemiology. 1999 Mar;10(2):181-3.

Control response proportions in population-based case-control studies in Germany.

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1
Institute of Medical Informatics, Biometry and Epidemiology, Medical Faculty, University of Essen, Germany.

Abstract

We investigated the methods of recruitment, levels and determinants of response, and the calculation method of response proportions in population-based case-control studies in Germany. We identified 26 eligible studies. The pooled analysis showed that the response proportion was 68% among controls and 80% among cases. Response proportions among controls without telephones were about 50% lower than for controls with telephones. We propose a new measure that indicates the efficacy of the recruitment strategy.

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PMID:
10069256
[Indexed for MEDLINE]

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