Table 2.

Univariate and multivariate Cox regression analyses for mortality of patients with CRAB-BSI

	Crude analysis		Adjusted analysis
	HR (95% CI)	p value	HR (95% CI)	p value
> 60 years of age	1.382 (0.782–2.443)	0.265	..	..
Male sex	0.817 (0.512–1.303)	0.395	..	..
ICU admission	1.610 (0.852–3.041)	0.143	..	..
APACHE II score ≧20 at infection	2.346 (1.197–4.600)	0.013	2.530 (1.571–4.075)	0.000
PBS > 3 at infection	0.773 (0.418–1.429)	0.411	..	..
CPIS > 7 at infection	2.107 (1.253–3.545)	0.005	2.277 (1.424–3.640)	0.001
Sulbactam therapy	0.592 (0.344–1.020)	0.059	0.566 (0.342–0.940)	0.028
Underlying disease
hypertension	1.562 (0.324–2.973)	0.040	0.762 (0.496–1.171)	0.214
hepatitis/cirrhosis	1.004 (0.539–1.870)	0.991	..	..
diabetes	1.188 (0.640–2.204)	0.586	..	..
cardiac	1.188 (0.621–2.275)	0.602	..	..
respiratory	0.922 (0.481–1.764)	0.805	..	..
tumor	0.638 (0.224–1.817)	0.638	..	..
Comorbid conditions
pulmonary infection	0.825 (0.514–1.324)	0.425	..	..
septic shock	1.431 (0.859–2.384)	0.169	..	..
respiratory failure	1.035 (0.600–1.784)	0.902	..	..
MOF	2.671 (1.399–5.103)	0.003	2.268 (1.283–4.007)	0.005
abdominal cavity infection	0.788 (0.331–1.877)	0.590	..	..
stroke	2.412 (0.875–6.648)	0.089	1.789 (0.697–4.588)	0.226
gastrointestinal bleeding	1.401 (0.537–3.653)	0.491	..	..

Note: “..”P < 0.1 in the univariate analysis were entered into a multivariate analysis; P ≥ 0.1 in the univariate analysis were not entered into a multivariate analysis

Abbreviations: CRAB-BSI, Acinetobacter baumannii bloodstream infection; HR, hazard ratio; CI, confidence interval;

PBS Pitt Bacteraemia Score, CPIS Clinical Pulmonary Infection Score APACHE II score, acute physiology and chronic health evaluation II, ICU intensive care unit, MOF, multiple organ failure