. 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 3. PCA (IM) meptazinol versus PCA (IM) pethidine.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pain score (measured 1 day after delivery)	1	10	Mean Difference (IV, Fixed, 95% CI)	−17.60 [−49.93, 14. 73]
2 Satisfied with mode of administration (PCA IM)	1	10	Risk Ratio (M-H, Fixed, 95% CI)	1.0 [0.71, 1.41]
3 Epidural	1	10	Risk Ratio (M-H, Fixed, 95% CI)	3.0 [0.15, 59.89]
4 Nausea score in labour (rated 1 day after delivery)	1	10	Mean Difference (IV, Fixed, 95% CI)	−8.0 [−48.70, 32.70]
5 Drowsiness score in labour (rated 1 day after delivery)	1	10	Mean Difference (IV, Fixed, 95% CI)	5.60 [−28.19, 39.39]
6 Naloxone administered	1	10	Risk Ratio (M-H, Fixed, 95% CI)	1.0 [0.08, 11.93]