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Table 2 Factors associated with ESBL-E acquisition amongst 473 internal medicine patients, University of Geneva Hospitals, March-June 20101; univariate regression analysis

From: Carriage of extended-spectrum beta-lactamase-producing enterobacteriacae among internal medicine patients in Switzerland

 

Proportions (n) or Median [range]

Univariate regression

Variable

ESBL acquisition (n = 21)

No ESBL acquisition (n = 452)

OR [95% CI]

P- value

Male gender

57.1 (12)

51.3 (232)

1.2 [0.51-3.05]

0.603

Transferred from ICU

28.6 (6)

8.2 (37)

4.48 [1.64-12.25

0.003

Transferred from other ward (other than the ICU)

14.3 (3)

2.4 (11)

6.69 [1.71-26.06]

0.006

Patient admitted from home

57.1 (12)

89.4 (404)

0.16 [0.06-0.39]

<0.001

Age (y)

66.9 [30.6-86.8]

64.1 [18.8-99.2]

  

Age

 < = 59 y

  

1.45 [0.16-12.90]

0.737

 60 -79 y

  

1.35 [0.16-11.19]

0.778

 > = 80 y

  

1.89 [0.23-15.99]

0.556

Length of stay (days)

12.1 [3–58]

7.7 [1–54]

  

Length of stay

    

 <7 d

  

2.69 [0.73-9.95]

0.138

 7-14 d

  

3.09 [0.67-14.23]

0.146

 14-21 d

  

1.5 [0.15-15.13]

0.718

 >21 d

  

25.17 [4.18-151.7]

<0.001

Acute renal failure2

45.4 (5)

22.7 (45)

2.83 [0.83-9.71]

0.098

Chronic renal failure2

27.2 (3)

14.6 (29)

2.12 [0.55-8.72]

0.268

End stage renal failure2

0.0 (0)

3.0 (6)

Omitted

 

Diabetes without complications2

9.1 (1)

18.4 (38)

0.45 [0.05-3.62]

0.453

Diabetes mellitus (with complications)2

9.1 (1)

11.6 (23)

0.76 [0.09-6.22]

0.799

Peripheral vascular disease2

0.0 (0)

5.1 (11)

Omitted

 

Chronic obstructive airway disease2

18.2 (2)

21.2 (42)

0.83 [0.17-3.96]

0.811

Dementia2

0.0 (0)

1.0 (2)

Omitted

 

Stroke2

0.0 (0)

1.0 (2)

Omitted

 

Cerebral hemorrhage2

0.0 (0)

1.0 (2)

Omitted

 

Congestive cardiac failure2

9.1 (1)

25.8 (51)

0.29 [0.04-2.30]

0.241

Ischemic heart disease2

0.0 (0)

9.6 (19)

Omitted

 

Hematological malignancy2

0.0 (0)

5.1 (11)

Omitted

 

Carotid artery stenosis2

0.0 (0)

2.5 (5)

Omitted

 

Parkinson’s disease2

9.1 (1)

0.5 (1)

19.70 [1.15-338.43]

0.040

Connective tissue disease2

0.0 (0)

1.0 (2)

Omitted

 

Liver failure2

9.1 (1)

1.0 (2)

9.80 [0.82-117.39]

0.072

Respiratory failure2

0.0 (0)

0.5 (1)

Omitted

 

Solid organ cancer2

18.1 (2)

14.1 (28)

1.35 [0.27-6.57]

0.711

Metastatic cancer2

0.0 (0)

6.6 (13)

Omitted

 

Peptic ulcer disease2

9.1 (1)

3.0 (6)

3.20 [0.35-29.18]

0.302

Infection2

0.0 (0)

0.5 (1)

Omitted

 

Any antibiotic use

42.9 (9)

26.5 (120)

2.08 [0.85-5.04]

0.108

Amoxicillin, flucloxacillin, phenoxymethylpenicillin

14.3 (3)

8.6 (39)

1.76 [0.49-6.25]

0.379

Ceftriaxon

4.8 (1)

1.3 (6)

3.72 [0.43-32.35]

0.234

Cefazolin, cefuroxime

14.3 (3)

1.8 (8)

9.25 [2.22-37.82]

0.002

Macrolide, tetracycline

0.0 (0)

1.3 (6)

Omitted

 

Fluoroquinolone

0.0 (0)

6.0 (27)

Omitted

 

Ertapenem, imipenem, meropenem

0.0 (0)

0.2 (1)

Omitted

 

Cotrimoxazole

0.0 (0)

1.3 (6)

Omitted

 

Vancomycin

4.8 (1)

0.4 (2)

11.34 [0.97-129.31]

0.052

Metronidazole

4.8 (1)

1.8 (8)

2.84 [0.33-23.27]

0.347

Gentamicin

0.0 (0)

0.3 (1)

Omitted

 
  1. 1. Positive ESBL swab at discharge where admission ESBL-E screening had been negative. Swabs must be collected within 36 h of discharge and patients with prior ESBL-E carriage were excluded.
  2. ICU intensive care unit; y years, d days;
  3. 2. Denominator adjusted for number of patients in whom data were available.