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December 20, 2000

Non-English Reports of Medical Research—Reply

Author Affiliations

Stephen J.LurieMD, PhD, Senior EditorIndividualAuthorPhil B.FontanarosaMD, Executive Deputy EditorIndividualAuthor

JAMA. 2000;284(23):2996-2997. doi:10.1001/jama.284.23.2993

In Reply: We agree with Dr Bassler and colleagues that the exclusion of non–English-language studies may lead to bias in meta-analysis results. Our MEDLINE search included all languages and revealed 25 publications of potential interest that were not in English. However, we felt that excluding these publications would not lead to significant bias in our meta-analysis. Of the 15 non-English studies that we were able to retrieve, none met our inclusion criteria. The remaining studies were either published prior to 1985, the earliest date that an English-language study was identified as meeting our inclusion criteria, or had an English abstract available online indicating that the study was a case series and therefore could not provide relative risks (RRs).

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