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. Author manuscript; available in PMC: 2014 Nov 16.
Published in final edited form as: Cochrane Database Syst Rev. 2010 Sep 8;(9):CD007396. doi: 10.1002/14651858.CD007396.pub2

Comparison 16. IM pentazocine versus IM pethilorfan.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Pain relief (women NOT obtaining pain relief) at 1 hour 1 69 Risk Ratio (M-H, Fixed, 95% CI) 1.22 [0.77, 1.95]
2 Additional analgesia required 1 98 Risk Ratio (M-H, Fixed, 95% CI) 0.52 [0.10, 2.71]
3 Assisted vaginal delivery 1 98 Risk Ratio (M-H, Fixed, 95% CI) 1.04 [0.07, 16.19]
4 Apgar < 8 at 1 minute 1 82 Risk Ratio (M-H, Fixed, 95% CI) 5.71 [0.72, 45.39]
5 Apgar < 8 at 5 minutes 1 82 Risk Ratio (M-H, Fixed, 95% CI) 0.0 [0.0, 0.0]