Systematic reviews in health care: Assessing the quality of controlled clinical trials - PubMed (original) (raw)

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Systematic reviews in health care: Assessing the quality of controlled clinical trials

P Jüni et al. BMJ. 2001.

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Meta-analysis of four empirical studies relating key aspects of methodological quality of controlled trials to their effect estimates. Meta-analysis was by random effects model. Size of squares is proportional to inverse of variance of estimate

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