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

Shorr et al.

Shorr et al. BMC Infectious Diseases 2013 13:268   doi:10.1186/1471-2334-13-268

Open Data