Journal of clinical epidemiology

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• J Clin Epidemiol · Sep 2006

  Publication bias affected the estimate of postoperative nausea in an acupoint stimulation systematic review.

  To assess the effect of publication bias and country effect on the results and conclusion of a systematic review of wrist P6 acupoint stimulation for the prevention of postoperative nausea and vomiting. ⋯ Publication bias affects the published estimate of postoperative nausea, not vomiting.

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