Comparison 1. Bethanechol versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Post‐void residual urine volume one month after surgery	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.2 Flow rate (mL per second)	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.3 Maximum flow rate (mL per second)	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.4 Number of women with low maximum flow rate (< 15 mL per second)	1		Risk Ratio (IV, Random, 95% CI)	Subtotals only
1.5 Detrusor pressure at maximum flow (cmH2O)	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.6 Number of women with low detrusor pressure at maximum flow	1		Risk Ratio (IV, Random, 95% CI)	Subtotals only
1.7 Bladder compliance	1		Mean Difference (IV, Random, 95% CI)	Subtotals only