Table 3. Multivariable model of association between infection with cefepime-resistant Pseudomonas aeruginosa and death, Philadelphia, PA, USA, 2001–2006*.

Variable	Adjusted OR (95% CI)	p value
Cefepime-resistant organism	1.28 (0.86–1.90)	0.232
Patient in ICU at time of culture	2.33 (1.75–3.10)	<0.001
APR-DRG	11.29 (6.53–19.50)	<0.001
Patient transfer from outside hospital	1.38 (1.05–1.81)	0.021
Length of hospital stay before culture	0.99 (0.98–1.00)	0.231

*OR, odds ratio; CI, confidence interval; ICU, intensive care unit; APR-DRG, all-patient refined-diagnosis–related group.