Comparison 9. Sensitivity analysis no.4.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 CLOSED; Pain score at day 1	4	224	Mean Difference (IV, Random, 95% CI)	‐1.83 [‐2.58, ‐1.08]
2 CLOSED; Postoperative bleeding	4	463	Odds Ratio (M‐H, Random, 95% CI)	0.82 [0.24, 2.82]
3 CLOSED; Urinary retention	4	463	Odds Ratio (M‐H, Random, 95% CI)	0.32 [0.11, 0.92]
4 CLOSED; Anal stenosis	3	418	Odds Ratio (M‐H, Random, 95% CI)	0.93 [0.17, 5.17]
5 CLOSED; Symptoms of incontinence at follow‐up	3	418	Odds Ratio (M‐H, Random, 95% CI)	0.33 [0.01, 8.22]
6 CLOSED; Hospital stay in days	2	145	Mean Difference (IV, Random, 95% CI)	‐0.57 [‐0.94, ‐0.20]