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. Author manuscript; available in PMC: 2014 Jun 25.
Published in final edited form as: Cochrane Database Syst Rev. 2012 May 16;5:CD007834. doi: 10.1002/14651858.CD007834.pub2

Comparison 7. Number with adverse events.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Adverse events 4 156 Risk Ratio (M-H, Random, 95% CI) 1.39 [0.85, 2.27]