Table 3– Determinants of hospital mortality among intensive care unit (ICU)-dependent critically ill patients

Variable	OR (95% CI)	p-value
Intercept		<0.0001
COPD as cause of ICU admission	3.16 (2.58–3.87)	<0.0001
COPD as comorbidity	1.39 (1.22–1.60)	<0.0001
Male sex	1.05 (0.99–1.12)	0.089
SAPS II	1.07 (1.07–1.07)	<0.0001
Interaction between COPD as cause of ICU admission and sex	1.09 (0.99–1.21)	0.084
Interaction between COPD as comorbidity and sex	1.06 (0.98–1.14)	0.127
Interaction between COPD as cause of ICU admission and SAPS II	0.98 (0.97–0.98)	<0.0001
Interaction between COPD as comorbidity and SAPS II	1.00 (0.99–1.00)	0.110
Interaction between sex and SAPS II	1.00 (1.00–1.00)	0.043
Year	0.97 (0.96–0.98)	<0.0001

COPD: chronic obstructive pulmonary disease; SAPS: Simplified Acute Physiology Score.