Table 1

Patient characteristics
Characteristic N = 412 (%)
Mean Age (±SD) 63.9 (14.4)
Male Gender 218 (52.9)
White Race 279 (67.7)
Urban Hospital Location 383 (93.0)
Teaching Hospital 207 (50.2)
Geographic region
 Northeast 56 (13.6)
 South 170 (41.3)
 Midwest 113(27.4)
 West 73 (17.7)
Comorbidities (ICD-9)1
Acute Respiratory Failure (518.81, 518.84) 313 (76.0)
Mechanical Ventilation 298 (72.3)
Acute Renal Failure (584.9, 584.5) 170 (41.3)
COPD (491.21, 496) 152 (36.9)
Septicemia or Septic Shock (038.9, 785.52) 148 (35.9)
CHF (428.0) 122 (29.6)
Hypertension (401.9) 106 (25.7)
Anemia (285.9) 96 (23.3)
Thrombocytopenia (287.4, 287.5) 83 (20.5)
Acute Steroids 315 (76.5)
Dialysis 72 (17.5)
Charlson Comorbidity index: Mean (SD); (range) 2.5 (2.0); (0.0 – 10.0)

1Defined by ICD-9 codes, except for steroid use and dialysis. Steroid use included the use of corticosteroids such as dexamethasone, methylprednisolone, prednisolone, and prednisone during the hospital stay. SD, standard deviation; COPD, chronic obstructive pulmonary disease; CHF, congestive heart failure.

Baddley et al.

Baddley et al. BMC Infectious Diseases 2013 13:29   doi:10.1186/1471-2334-13-29

Open Data