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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 24. PCA pentazocine versus PCA pethidine.

No. of Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Pain score in labour 1 23 Std. Mean Difference (IV, Fixed, 95% CI) −0.76 [−1.62, 0.09]
2 Pain relief rated as good one day after birth 1 28 Risk Ratio (M-H, Fixed, 95% CI) 0.82 [0.51, 1.32]
3 Epidural 1 28 Risk Ratio (M-H, Fixed, 95% CI) 1.5 [0.29, 7.65]
4 Nausea and vomiting 1 29 Risk Ratio (M-H, Fixed, 95% CI) 0.10 [0.01, 1.61]
5 Sedation 1 29 Risk Ratio (M-H, Fixed, 95% CI) 0.21 [0.01, 4.09]
6 Caesarean section 1 29 Risk Ratio (M-H, Fixed, 95% CI) 0.36 [0.02, 8.07]
7 Apgar score < 7 at 5 minutes 1 29 Risk Ratio (M-H, Fixed, 95% CI) 0.0 [0.0, 0.0]
8 Breastfeeding at discharge 1 23 Risk Ratio (M-H, Fixed, 95% CI) 1.0 [0.83, 1.17]