John Ioannidis
Publication Details
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The use of older studies in meta-analyses of medical interventions: a survey.
Open Med. 2009; (2): e62-8
Evidence for medical interventions sometimes derives from data that are no longer up to date. These data can influence the outcomes of meta-analyses, yet do not always reflect current clinical practice. We examined the age of the data used in meta-analyses contained within systematic reviews of medical interventions, and investigated whether authors consider the age of these data in their interpretations.
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