TABLE 1.

Characteristics of adult patients admitted to medical and surgical ICUs^a

Patient characteristic	Values
Mean (SD) age (yr)	55.42 (15.8)
No. (%) of patients of male sex	7,651 (54.8)
No. (%) of patients of white race	7,387 (52.9)
No. (%) of patients who died in hospital	2,717 (19.5)
No. (%) of patients who died in ICU	1,816 (13.0)
No. (%) of patients with:
Surveillance culture positive for ESBL-producing isolate on ICU admission	557 (4.0)
Surveillance culture positive for ESBL-producing isolate >48 h after ICU admission	247 (1.8)
Clinical culture positive for E. coli or Klebsiella spp. at least 48 h after date of transfer into ICU	77 (0.55)
Clinical culture positive for any E. coli or Klebsiella spp. during admission	67 (0.27)
Median (IQR) ICU length of stay (days)	2.9 (1–6)
Mean (SD) Charlson comorbidity index	2.6 (2.5)
Mean (SD) chronic disease score	7.5 (4.1)
No. (%) of patients with the following comorbid illness:
HIV/AIDS	600 (4.30)
Cancer	2,653 (19.0)
Cerebrovascular disease	1,919 (13.7)
Chronic pulmonary disease	2,929 (20.9)
Heart failure	2,000 (14.3)
Dementia	31 (0.2)
Diabetes	2,467 (17.7)
Liver disease (severe)	942 (6.7)
Myocardial infarction	1,065 (7.6)
Peripheral vascular	941 (6.7)
Renal disease	1,638 (11.7)

^aData are for 13,961 patients.