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Table 2 Characteristics of ST131 E. coli colonized and non-colonized hospital contacts of index nosocomial patients. Data are expressed as number of exposed patients (percentage) except where specified

From: Intestinal colonization due to Escherichia coli ST131: risk factors and prevalence

Features of contacts (individual level) ST 131 colonized hospital contacts (n = 10) Non-ST131 colonized hospital contacts (n = 44) P Adjusted OR p
Median age in years (IQR) 81.5 (75.5–87.75) 6.08 (59.75–80.0) 0.05   
Male gender 5 (50.0) 20 (45.4) 0.79   
Median Charlson index (IQR) 1 (0.25–5) 1 (0–3.75) 0.76   
Diabetes mellitus 3 (30.0) 15 (34.0) 0.80   
Cancer 3 (30.0) 13 (29.5) 0.98   
Liver cirrosis 0 1 (2.2) 1   
Recurrent urinary tract infections 1 (10.0) 1 (2.2) 0.34   
Dependent for basic activities 5 (50.0) 3 (6.8) 0.003 21.1 (3.61–160.0) 0.001
Bed-ridden 1 (10.0) 0 0.18   
Shared room with index patient 7 (70.0) 24 (54.5) 0.37   
Surgery during present admission 4 (40.0) 15 (34.0) 0.72   
Urinary catheter 6 (60.0) 12 (27.2) 0.19 8.4 (0.97–76.9) 0.05
Recent antimicrobial use 4 (40.0) 16 (36.3) 0.83   
Proton pump inhibitor use 6 (60.0) 34 (77.2) 0.85   
Median (IQR) days of hospital stay 5.5 (4.0–11.25) 6 (3.75–9) 0.70   
Features of index patient (cluster level) Clusters with at least one ST131 colonized hospital contact (n = 8) Clusters without any ST131 colonized hospital contact (n = 22) P   
Median age in years (IQR) 62.50 (52.75–78) 67.10 (58.25–80.75) 0.70   
Male gender 5 (62.5) 6 (27.3) 0.28   
Median Charlson index (IQR) 2.60 (0–6) 2.40 (0–6) 0.7   
Bed-ridden 0 3 (13.6) 0.53   
Dependent for basic activities 2 (25) 4 (18.1) 0.73   
Admission to a surgical ward 4 (50) 8 (36.3) 0.66   
Admission to a medical ward 5 (62.5) 11 (50) 0.74   
Admission to an intensive care unit 1 (12.5) 0 0.21   
Surgery during present admission 4 (50) 5 (22.7) 0.39   
Urinary catheter 7 (87.5) 10 (45.4) 0.76   
Recent antimicrobial use 7 (87.5) 10 (45.4) 0.42   
Median (IQR) days of hospital stay 27.2 (7–46) 35.5 (14.75–24) 0.59