TABLE 3.

Impact of patient characteristics on length of stay for 745 patients discharged alive after gram-negative bloodstream isolate culture (R² = 0.27)

Patient characteristic	β (days [standard error])	P valuea
Male sex	1.98 (0.79)	0.01
Age (yr)	0.02 (0.02)	0.30
Organismb
P. aeruginosa	2.22 (1.35)	0.10
E. coli	−0.85 (1.02)	0.40
K. pneumoniae	0.02 (1.15)	0.99
Nosocomial infection	6.72 (1.07)	<0.001
Charlson scorec
1 or 2	1.65 (0.84)	0.51
≥3	2.76 (1.18)	0.02
Surgical admission	2.26 (1.18)	0.018
Sepsis	−1.97 (1.08)	0.068
ICU admissiond	9.66 (1.00)	<0.001
Inactive empiric antimicrobial therapy	1.80 (1.12)	0.11

^aDetermined by multiple linear regression.

^bCompared to other organisms.

^cCompared to a Charlson score of 0.

^dDefined as ICU admission at the time of the index culture.