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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 4. Diamorphine + prochloprerazine versus pethidine + prochloprerazine.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Global assessment of pain relief at 24 hours 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.88 [0.67, 1.16]
2 Pain intensity at 1 hour (moderate or severe) 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.85 [0.72, 1.01]
3 Additonal analgesia required 1 133 Risk Ratio (M-H, Fixed, 95% CI) 1.35 [0.53, 3.40]
4 Epidural 1 133 Risk Ratio (M-H, Fixed, 95% CI) 1.22 [0.72, 2.07]
5 Vomiting 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.39 [0.17, 0.86]
6 Maternal sleepiness 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.93 [0.52, 1.66]
7 Assisted vaginal delivery 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.96 [0.46, 2.02]
8 Caesarean section 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.52 [0.10, 2.76]
9 Apgar < 7 at 1 minute 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.41 [0.18, 0.91]
10 Apgar < 7 at 5 minutes 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.35 [0.04, 3.27]
11 Neonatal resuscitation 1 133 Risk Ratio (M-H, Fixed, 95% CI) 1.21 [0.73, 2.02]
12 Admission to NICU 1 133 Risk Ratio (M-H, Fixed, 95% CI) 0.58 [0.21, 1.64]