Comparison 7. Anticoagulants versus control: 1‐year overall mortality.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
7.1 1‐year overall mortality: LMWH vs no thromboprophylaxis	9	2681	Risk Ratio (IV, Random, 95% CI)	0.94 [0.83, 1.07]
7.1.1 Dalteparin	4	782	Risk Ratio (IV, Random, 95% CI)	0.97 [0.77, 1.21]
7.1.2 Nadroparin	2	1452	Risk Ratio (IV, Random, 95% CI)	0.95 [0.77, 1.18]
7.1.3 Enoxaparin	2	411	Risk Ratio (IV, Random, 95% CI)	0.97 [0.80, 1.16]
7.1.4 Bemiparin	1	36	Risk Ratio (IV, Random, 95% CI)	0.18 [0.05, 0.70]
7.2 1‐year overall mortality: semuloparin vs placebo	1	3212	Risk Ratio (IV, Fixed, 95% CI)	1.02 [0.96, 1.08]
7.3 1‐year overall mortality: UFH vs no thromboprophylaxis	1	277	Risk Ratio (IV, Fixed, 95% CI)	0.86 [0.72, 1.03]