Table 6.

Baseline characteristics prior to hospitalization for 35 patients (with MRSA) and 452 controls (without MRSA)

Baseline characteristics	MRSA (n = 35)	No MRSA (n = 452)	p-value
Mean age ± SD (years)	66.7 ± 20.1	61.3 ± 17.6	0.09
Male gender	22 (62.9%)	244 (54.0%)	0.31
Previous hospitalization	23 (65.7%)	188 (41.6%)	0.006
Transfer status
From other hospital	5 (14.3%)	52 (11.3%)	0.59
From a long-term care facility	0	6 (1.3%)	1.00
Underlying diseases
Any underlying disease	31 (88.6%)	389 (86.1%)	0.68
Hypertension	22 (62.9%)	268 (59.3%)	0.68
Diabetes mellitus	13 (37.1%)	172 (38.1%)	0.92
Cardiovascular disease	12 (34.3%)	121 (26.8%)	0.34
Cerebrovascular disease	15 (42.9%)	82 (18.1%)	< 0.001
Chronic liver disease	5 (14.3%)	83 (18.4%)	0.55
Chronic renal disease	3 (8.6%)	61 (13.4%)	0.60
Chronic lung disease	5 (14.3%)	58 (12.8%)	0.79
Malignancy	6 (17.1%)	81 (17.9%)	0.91
Solid malignancy	5 (14.3%)	70 (15.5%)	0.85
Hematologic malignancy	1 (2.9%)	11 (2.4%)	0.60
Hematologic diseases	3 (8.6%)	44 (9.7%)	1.00
Prior organ transplantation	0	7 (1.6%)	1.00
Receipt of any immunosuppressive agent	4 (11.4%)	55 (12.2%)	1.00
HIV infection	1 (2.9%)	15 (3.3%)	1.00
Previous antibiotic exposure within 90 days after hospitalization
Any antibiotic	19 (54.3%)	129 (28.5%)	0.001
Penicillins	2 (5.7%)	17 (3.8%)	0.64
Cephalosporins	6 (17.1%)	54 (12.0%)	0.37
Carbapenems	6 (17.1%)	27 (6.0%)	0.01
Beta-lactam/beta-lactamase inhibitor	5 (14.3%)	22 (4.9%)	0.02
Fluoroquinolones	9 (25.7%)	37 (8.2%)	0.001
Macrolides	2 (5.7%)	17 (3.8%)	0.64
Others	5 (14.3%)	37 (8.2%)	0.22
Previous use of indwelling catheters
Urinary catheter	13 (37.1%)	32 (7.1%)	< 0.001
Nasogastric tube	13 (37.1%)	60 (13.3%)	< 0.001