TABLE 4.

Multiple linear regression analysis of factors associated with the median length of stay (LOS) of all patients with community-acquired pneumonia

	P	Ratio* (95% CI)
Site†
Site A versus site D	0.007	1.21 (1.05 to 1.38)
Site B versus site D	0.563	0.96 (0.84 to 1.10)
Site C versus site D	0.470	1.07 (0.90 to 1.27)
Site E versus site D	0.084	0.84 (0.68 to 1.02)
Site F versus site D	0.033	0.83 (0.70 to 0.98)
Functional status
Walking with assistance versus walking independently	<0.001	1.29 (1.17 to 1.43)
Prosthesis versus walking independently	0.760	1.16 (0.45 to 3.00)
Bedridden versus walking independently	0.143	1.24 (0.93 to 1.64)
Wheelchair-bound versus walking independently	0.779	1.03 (0.86 to 1.23)
Weight loss >5% of body weight (yes versus no)	0.001	1.29 (1.12 to 1.48)
Heart disease (yes versus no)	0.002	1.14 (1.05 to 1.25)
Indwelling urinary catheter (new) (yes versus no)	<0.001	1.29 (1.15 to 1.45)
Empyema (yes versus no)	<0.001	2.47 (1.78 to 3.42)
Liver disease (yes versus no)	0.006	0.73 (0.59 to 0.91)
COPD (yes versus no)	0.002	1.15 (1.06 to 1.26)
Altered mental state (yes versus no)	0.009	1.20 (1.05 to 1.37)
Shortness of breath (yes versus no)	<0.001	1.18 (1.08 to 1.30)
Cefuroxime (used versus not used)	0.001	1.19 (1.07 to 1.32)
Ciprofloxacin (used versus not used)	0.001	1.42 (1.15 to 1.74)
Clindamycin (used versus not used)	<0.001	1.39 (1.17 to 1.64)
Metronidazole (used versus not used)	0.001	1.31 (1.13 to 1.53)
Hours from presenting to ER to first dose of antibiotic (per additional hour)	<0.001	1.01 (1.0 to 1.01)

^*Ratio of two median LOS (for example, the ratio of median LOS of site B to median LOS of site D is 0.96);

^†Sites A and B are community and tertiary care hospitals, sites C and D are community and secondary care hospitals, and sites E and F are community hospitals. COPD Chronic obstructive pulmonary disease; ER Emergency room