Comparison 2. Vasectomy with irrigation versus standard vasectomy.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Azoospermia at 16 weeks	1	163	Odds Ratio (M‐H, Fixed, 95% CI)	0.63 [0.31, 1.28]
2 Lingering sperm at 40 weeks	1	163	Odds Ratio (M‐H, Fixed, 95% CI)	1.28 [0.62, 2.63]