TABLE 3.

Bivariate Analysis of Hospital Characteristics Associated with Community-Associated Methicillin-Resistant Staphylococcus aureus(MRSA) Isolation (spa type t008)

	All isolates		Hospital-onset infection isolates		Community-onset infection isolates
Hospital characteristic	OR	P	OR	P	OR	P
Annual admissions (per 1,000 admissions)	0.9	.03	0.9	.5	0.9	<.001
Long-term acute care facility	0.6	.4	0.4	<.001	-	-
Pediatric hospital	3.2	<.001	5.2	.001	2.6	<.001
Nonprofit hospital	0.6	.04	0.7	.2	0.6	.03
Demographic characteristic, % of all patients in that hospital
Male sex	1.3	.3	1.2	.5	1.4	.06
Non-White race	1.2	<.001	1.2	<.001	1.2	<.001
Hispanic ethnicity	1.3	<.001	1.2	.01	1.2	<.001
Medicaid insurance	1.3	<.001	1.4	<.001	1.2	<.001
Case mix, % of all patients in that hospital
Acute myocardial infarction	0.5	.06	0.3	.002	0.7	.4
Congestive heart failure	0.7	.004	0.6	.001	0.8	.2
Peripheral vascular disease	0.2	<.001	0.3	<.001	0.3	.002
Stroke	0.4	.001	0.4	.005	0.5	.08
Dementia	0.6	.3	0.5	.2	0.9	.9
COPD/asthma	0.7	<.001	0.7	<.001	0.6	.1
Rheumatologic disease	0.0	<.001	0.0	<.001	0.0	<.001
Peptic ulcer	0.2	.08	0.0	.04	0.4	.3
Paralysis	0.5	.3	0.5	.3	1.4	.8
Renal disease	0.6	.002	0.6	.002	0.6	.1
AIDS	0.1	.1	0.0	.08	0.2	.2
Diabetes	0.9	.4	0.8	.07	1.1	.7
Liver disease	0.5	.6	0.2	.2	0.9	.9
Cancer	0.4	.004	0.4	.007	0.4	.008
Current surgery	0.9	.7	0.9	.8	0.8	.1
High Romano score	0.7	<.001	0.7	<.001	0.7	.01

NOTE. Community-onset infection isolates were defined as those isolated on or before the second day of hospitalization, and hospital-onset infection isolates were defined as those isolated after the second day of hospitalization. The following variables are continuous and expressed per 10% increase: the percentage of patients with male sex, non-White race, Hispanic ethnicity, Medicaid insurance, current surgery, high Romano score, or any of the listed comorbidities. COPD, chronic obstructive pulmonary disease; OR, odds ratio.