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. Author manuscript; available in PMC: 2014 Sep 15.
Published in final edited form as: Cochrane Database Syst Rev. 2010 Apr 14;(4):CD001888. doi: 10.1002/14651858.CD001888.pub4

Comparison 6.

Cell salvage - blood transfused (language and methodological quality)

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Language of Publication (All Studies) 66 Risk Ratio (M-H, Random, 95% CI) Subtotals only
 1.1 English 60 5711 Risk Ratio (M-H, Random, 95% CI) 0.61 [0.54, 0.70]
 1.2 Non-English 6 274 Risk Ratio (M-H, Random, 95% CI) 0.63 [0.50, 0.79]
2 Methodological Quality - Allocation concealment (All Studies) 67 Risk Ratio (M-H, Random, 95% CI) Subtotals only
 2.1 Allocation concealment - Yes 1 47 Risk Ratio (M-H, Random, 95% CI) 0.35 [0.04, 3.11]
 2.2 Allocation concealment - Unclear 42 3812 Risk Ratio (M-H, Random, 95% CI) 0.62 [0.53, 0.72]
 2.3 Allocation concealment - No 24 2166 Risk Ratio (M-H, Random, 95% CI) 0.62 [0.51, 0.75]