Comparison 9. Stenosis/Outlet obstruction.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Proportion of patients complaining of difficulty voiding due to outlet obstruction or anal stenosis	10	1536	Odds Ratio (M‐H, Fixed, 95% CI)	0.68 [0.34, 1.35]
2 stenosis/outlet obstruction at follow up >1 year but <2 years	3	295	Odds Ratio (M‐H, Fixed, 95% CI)	0.44 [0.13, 1.49]
3 stenosis/outlet obstruction at follow‐up >2years	4	197	Odds Ratio (M‐H, Fixed, 95% CI)	0.82 [0.17, 3.92]