Table 5.

Risk factors associated with 90-day mortality

Variables	Univariate analysis			Multivariate analysis
	OR	95% CI	P value	OR	95% CI	P value
Age, years	1·028	1·013–1·044	<0·001	1·038	1·013–1·064	0·003
BMI, kg/m2	1·051	0·980–1·128	0·165
Nosocomial acquisition	4·871	2·154–11·018	<0·001	2·954	0·952–9·168	0·061
APACHE II	1·143	1·098–1·190	<0·001	0·996	0·933–1·064	0·906
SOFA score	1·378	1·257–1·511	<0·001	1·427	1·223–1·665	<0·001
Solid cancer	2·906	1·525–5·540	0·001	1·502	0·618–3·648	0·369
Hypertension	2·149	1·261–3·663	0·005	0·872	0·412–1·844	0·719
Day from hospitalization to ICU admission	1·160	1·046–1·286	0·005	1·112	0·956–1·294	0·168
Day from symptom onset to antiviral agent	1·053	0·983–1·127	0·139	1·051	0·956–1·156	0·301
High dose oseltamivir	0·800	0·478–1·338	0·395
Triple combination regimen	0·908	0·450–1·832	0·787
Clinician's decision that corticosteroids should be prescribed	3·761	2·197–6·439	<0·001	3·700	1·739–7·873	0·001
Nosocomial bacterial pneumonia	3·092	1·772–5·394	<0·001	3·381	1·162–9·836	0·025
Nosocomial bacterial pneumonia by CRAB	5·100	2·338–11·123	<0·001	5·594	1·538–20·354	0·009
Clinician's decision that RRT should be prescribed	4·727	2·473–9·036	<0·001	1·215	0·466–3·164	0·691

APACHE II, Acute Physiology and Chronic Health Evaluation II; BMI, body mass index; CI, confidence interval; CRAB carbapenem-resistant Acinetobacter baumannii; ICU, intensive-care unit; OR, odds ratio; RRT, renal replacement therapy; SOFA, Sequential Organ Failure Assessment.