Table 4.

Multivariable analysis of risk factors for mortality.

Variable	Odds ratio (95% CI)	P
Age > 65 years	1.8 (1.4–2.3)	<0.0001
Extreme severity of illness	2.8 (1.5–5.3)	<0.0001
Tertiary hospital admission	1.9 (1.4–2.5)	<0.0001
Hypercoagulability	2.6 (1.8–3.7)	<0.0001
Chronic kidney disease	1.8 (1.4–2.3)	<0.0001
Cardiac dysrhythmia	1.5 (1.1–1.9)	0.003
Mechanical ventilation	2.9 (2.3–3.8)	<0.0001
Bowel resection
None (reference)	1.0
Small intestine	0.13 (0.09–0.21)	<0.0001
Large intestine	0.15 (0.10–0.23)	<0.0001
Small + large intestine	0.19 (0.12–0.30)	<0.0001

Hosmer–Lemeshow goodness of fit: χ² = 8.9, P = 0.35.

c-Statistic = 0.85.