Empirical evidence of bias in treatment effect estimates in controlled trials with different interventions and outcomes: meta-epidemiological study.

Empirical evidence of bias in treatment effect estimates in controlled trials with different interventions and outcomes: meta-epidemiological study.

OBJECTIVE: To examine whether the association of inadequate or unclear allocation concealment and lack of blinding with biased estimates of intervention effects varies with the nature of the intervention or outcome. DESIGN: Combined analysis of data from three meta-epidemiological studies based on...

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Bibliographic Details
Main Authors: Wood, L, Egger, M, Gluud, L, Schulz, K, Jüni, P, Altman, D, Gluud, C, Martin, R, Wood, A, Sterne, J
Format: Journal article
Language:English
Published: 2008

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