Table 1 Patient characteristics
MRSA | No MRSA | p | |
|---|---|---|---|
(n = 837) | (n = 5138) | ||
Demographics | |||
Age, mean ± SD, years | 69.4 ± 17.1 | 67.1 ± 17.0 | <0.001 |
Male, % | 53.4% | 55.7% | 0.435 |
Race | 0.606 | ||
Caucasian, % | 80.6% | 82.1% | |
African-American, % | 14.6% | 13.4% | |
Other/Unknown, % | 4.8% | 4.5% | |
Co morbid illnesses (current or prior to index admission unless noted) | |||
Hypertension, % | 56.2% | 52.8% | 0.075 |
Diabetes mellitus, % | 28.0% | 25.4% | 0.117 |
Coronary artery disease, % | 29.2% | 27.6% | 0.358 |
Congestive heart failure, % | 35.0% | 26.8% | <0.001 |
Chronic obstructive pulmonary disease, % | 50.1% | 44.7% | 0.004 |
Malignancy (includes lymphoma, myeloma, secondary neoplasm), % | 13.7% | 14.% | 0.433 |
Cerebrovascular disease (any) prior to index admission, % | 10.6% | 5.0% | <0.001 |
Ischemic stroke prior to index admission, % | 5.0% | 3.2% | 0.007 |
Dementia, % | 9.3% | 4.6% | <0.001 |
Chronic haemodialysis, % | 21.1% | 15.6% | <0.001 |
Healthcare-associated risk factors | |||
Nursing home/skilled nursing facility/long term acute care exposure within last 90 days, % | 25.9% | 11.4% | <0.001 |
Hospital-based wound care within 30 days prior to index admission, % | 5.38% | 1.32% | <0.001 |
Recent hospitalization (for ≥ 2 days and within the last 90 days), % | 38.7% | 21.7% | <0.001 |
Prior intravenous antibiotic therapy within the last 30 days, % | 5.4% | 1.3% | <0.001 |
Immunosuppression, % | 23.4% | 16.2% | <0.001 |
Severity of illness | |||
Intensive care unit admission (on or before index culture), % | 22.9% | 14.9% | <0.001 |