Comparison 1. Nonsteroidal versus control (analgesics or placebo).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Perioperative bleeding requiring surgical intervention	14	1044	Peto Odds Ratio (Peto, Fixed, 95% CI)	1.69 [0.71, 4.01]
2 Perioperative bleeding requiring non‐surgical intervention	10	745	Peto Odds Ratio (Peto, Fixed, 95% CI)	0.99 [0.41, 2.40]
3 Vomiting	13	1021	Risk Ratio (M‐H, Fixed, 95% CI)	0.72 [0.61, 0.85]