Table 2—

Multivariate analysis(Cox proportional hazard models) on the risk of death at 30 days

	Positive shock index		SBP <100 mmHg		SBP <90 mmHg
	OR (95% CI)	p-value	OR (95% CI)	p-value	OR (95% CI)	p-value
Age >70 yrs	1.8 (1.4–2.4)	<0.001	1.7 (1.3–2.3)	<0.001	1.7 (1.3–2.3)	<0.001
Body weight <65 kg	1.8 (1.4–2.3)	<0.001	1.9 (1.5–2.3)	<0.001	1.9 (1.5–2.4)	<0.001
Previous VTE	0.6 (0.4–0.8)	0.005	0.6 (0.4–0.8)	0.005	0.6 (0.4–0.8)	0.004
Cancer	3.3 (2.6–4.2)	<0.001	3.4 (2.7–4.3)	<0.001	3.4 (2.7–4.3)	<0.001
Immobility ≥4 days	2.0 (1.6–2.6)	<0.001	2.2 (1.8–2.8)	<0.001	2.2 (1.8–2.8)	<0.001
CrCl <30 mL·min⁻¹	2.5 (1.9–3.4)	<0.001	2.4 (1.8–3.3)	<0.001	2.5 (1.9–3.3)	<0.001
P_a,O₂<60 mmHg	1.5 (1.2–1.9)	0.001	1.6 (1.2–2.0)	<0.001	1.6 (1.2–2.0)	<0.001
Positive shock index	2.4 (1.9–3.0)	<0.001
SBP <100 mmHg			1.6 (1.1–2.2)	0.005
SBP <90 mmHg					1.5 (0.9–2.3)	0.08

SBP: systolic blood pressure; OR: odds ratio; CI: confidence interval; VTE: venous thromboembolism; CrCl: creatinine clearance; P_a,O₂: arterial oxygen tension.