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Table 1 Main characteristics of the population

From: Epidemiology of extended-spectrum beta-lactamase-producing Enterobacteriaceae in an intensive care unit with no single rooms

Variable All patients
n = 470
No ESBL colonization
n = 408
ESBL colonization
n = 62
p
Age (years) 66.0 [54.0, 77.0] 66 [54, 77] 68 [57, 78] 0.5
Age > 65 years 256 (54.5) 218 (53.4) 38 (61.3) 0.3
Male gender 283 (60.2) 245 (60.0) 38 (61.3) 0.9
SAPS II 46.0 [32.0, 62.0] 45 [32, 62] 49 [37.3, 55.5] 0.5
SOFA score 7.0 [4.0, 9.0] 6 [4, 9] 7 [4.5, 8.5] 0.6
Preexisting conditions
 Heart failure 65 (13.9) 53 (13.0) 12 (19.3) 0.2
 Peripheral arterial disease 60 (12.8) 45 (11.0) 15 (24.2) 0.007
 Diabetes 110 (23.5) 91 (22.3) 19 (36.8) 0.2
 Cirrhosis 21 (4.5) 18 (4.4) 3 (4.8) 0.8
 Chronic obstructive pulmonary disease 69 (14.7) 59 (14.4) 10 (16.1) 0.9
 Chronic kidney disease 61 (13.0) 52 (12.7) 9 (14.5) 0.8
 Immunosuppression 75 (16.0) 62 (15.2) 12 (19.3) 0.5
Mechanical ventilation 283 (60.2) 248 (60.8) 35 (56.5) 0.6
Catecholamine use 224 (47.8) 190 (46.6) 34 (54.8) 0.3
Duration of mechanical ventilation (days) 2.0 [0.0, 5.0] 2.0 [0.0, 5.0] 1.0 [0.0, 4.0] 0.4
ICU length of stay (days) 4.0 [2.0, 8.0] 4 [2.0, 8.0] 4.0 [3.0, 8.0] 0.8
Transfer from another unit 239 (50.9) 206 (50.5) 33 (53.2) 0.8
Postoperative care 109 (23.2) 94 (23.0) 14 (22.6) 0.9
Hospitalization within the previous 3 months 243 (51.7) 204 (50) 39 (62.9) 0.08
Antibiotics within the previous 3 months 81 (17.2) 68 (16.7) 13 (20.1) 0.5
Antibiotics during ICU 346 (73.6) 303 (74.3) 43 (69.3) 0.5
Duration of antibiotic therapy 3.0 [0.0, 6.0] 3.0 [0.0, 6.0] 3.0 [0.0, 7.0] 0.8
Mortality 62 (13.2) 56 (13.7) 6 (9.7) 0.2
  1. Categorical data are expressed as n (%)
  2. Quantitative data are expressed as median [IQR]