Comparison 13. Prophylactic low molecular weight heparin (LMWH) versus non‐steroidal anti‐inflammatory drugs (NSAIDs).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Venous thromboembolism end‐of‐treatment	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
2 Venous thromboembolism 3‐month follow‐up	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3 Extension or recurrence (or both) of superficial thrombophlebitis	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
4 Major bleeding	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
5 Heparin‐induced thrombocytopenia	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected