Comparison 1. Pain.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pain score at day 1	10	835	Mean Difference (IV, Random, 95% CI)	‐2.07 [‐2.77, ‐1.38]
2 Pain score at day 7	3	214	Mean Difference (IV, Random, 95% CI)	‐1.72 [‐3.59, 0.15]
3 Pain score at day 14	4	183	Mean Difference (IV, Random, 95% CI)	‐0.12 [‐0.37, 0.12]
4 Daily pain score first 7 days	1	34	Mean Difference (IV, Random, 95% CI)	0.60 [‐0.35, 1.55]
5 Pain score at first defecation	1	34	Mean Difference (IV, Random, 95% CI)	‐6.0 [‐7.59, ‐4.41]
6 Amount of pethidine (in mg) used	1	45	Mean Difference (IV, Random, 95% CI)	‐10.0 [‐34.98, 14.98]
7 Amount of tramadol (in g) used / week	1	34	Mean Difference (IV, Random, 95% CI)	‐0.75 [‐2.10, 0.60]
8 Number of ketoprofen (50 mg) used / week	1	56	Mean Difference (IV, Random, 95% CI)	‐2.70 [‐6.18, 0.78]
9 Number of dipyrone (250 mg) used	1	112	Mean Difference (IV, Random, 95% CI)	‐2.50 [‐2.75, ‐2.25]
10 Number of diclofenac (75 mg) used first 24 hours	2	153	Mean Difference (IV, Random, 95% CI)	‐0.78 [‐1.27, ‐0.30]
11 Number of patients using additional parenteral analgesics	1	84	Odds Ratio (M‐H, Random, 95% CI)	0.13 [0.05, 0.33]