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Table 2 ESBL-producing Enterobacteriaceae, isolated time (IT) by species, and considered variablesa

From: About the usefulness of contact precautions for carriers of extended-spectrum beta-lactamase-producing Escherichia coli

 

Median KS test (Q1-Q3), pb

Median IT with 1st and 3rd quartiles and Kolmogorov-Smirnov (KS) test

ESBL-positive E. coli

 

ESBL-positive E. cloacae

 

ESBL-positive K. pneumoniae

 

Number of isolates (total = 1078)

      

 Hospital A

1.5 (0–9), n = 186

 

8.5 (2–23), n = 76

 

8 (1–23), n = 185

 
  

0.13

 

0.009

 

0.04

 Hospital B

3 (0–13), n = 264

 

17 (7–31), n = 116

 

13 (3–28), n = 161

 

Unit’s activity (n = 1077)

      

 Medicine (reference)

2 (0–8), n = 229

 

10.5 (2–31), n = 74

 

8 (1–23), n = 161

 

 Surgery

2.5 (0–14), n = 152

0.30

13 (5–24), n = 54

0.66

7 (1–17), n = 85

0.67

 ICU

5 (1.5–13.5), n = 68

0.04

15 (7.5–28.5), n = 64

0.07

17.5 (7.5–37), n = 100

0.003

Age (n = 1058)

      

 Children (<14 y-old)

2.5 (0–9.5), n = 120

 

7 (1–22), n = 37

 

8 (2–26.5), n = 136

 
  

0.97

 

0.08

 

0.61

 Adult

2 (0–11), n = 318

 

14 (6–27), n = 153

 

11 (1–24), n = 148

 

Gender (n = 1078)

      

 Men

4 (0–15), n = 199

 

14 (5–28.5), n = 112

 

10 (1–24), n = 198

 
  

0.09

 

0.87

 

0.61

 Women

2 (0–8), n = 251

 

14 (5–27), n = 80

 

9 (1–25.5), n = 148

 

Clinical site (n = 961)

      

Urine (reference)

2 (0–10.5), n = 316

 

14 (4–28.5), n = 96

 

8 (1–23), n = 181

 

Blood culture

2 (0–7), n = 37

0.67

15.5 (5–28), n = 26

0.99

11 (1–28), n = 33

0.41

Respiratory protected

5 (1–14), n = 11

0.94

12 (5.5–24), n = 12

0.63

19 (5–62), n = 19

0.10

Respiratory unprotected

2 (1–7), n = 12

0.96

13 (2–26), n = 14

0.86

8.5 (3–21), n = 38

0.06

Intravascular devices

8 (4–9), n = 7

0.05

14 (7–25), n = 21

0.18

14 (9–21), n = 27

0.006

Deep purulent samples

17 (1–41), n = 17

0.007

18 (4–27), n = 7

0.99

19 (14–21), n = 6

0.19

Total by ESBL producer

2 (0–11), n = 450

 

14 (5–28), n = 192

 

10 (1–24), n = 346

 
  1. aTotal numbers may differ according to categories since some data were not always available; bsignificant level, p < 0.05