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Table 2 Univariate logistic analysis of risk factors for carriage of OXA-72-producing Acinetobacter baumannii or OXA-23-producing A. baumannii

From: High prevalence and clonal dissemination of OXA-72-producing Acinetobacter baumannii in a Chinese hospital: a cross sectional study

Characteristics

Control casesa

(n = 23)

OXA-72 cases

(n = 45)

OR(CI 95%)

P value

OXA-23 cases

(n = 33)

OR(CI 95%)

P value

Age, median(range)

76(2,96)

78(28,94)

1.02(1.00,1.05)

0.081

78(21,90)

1.00(0.99,1.03)

0.460

Male gender, n(%)

22(75.9)

27(60.0)

0.32(0.09,1.08)

0.067

23(69.7)

0.48(0.13,1.79)

0.484

ICU stay, n (%)

1(4.3)

27(60.0)

33.00(4.08,267.04)

0.001

22(66.7)

44.00(5.23,370.52)

< 0.001

Length of stay in the ICU (days), median(range)

0(0,2)

5(0,100)

2.29(1.20,4.37)

0.012

3(0,100)

2.29(1.03,5.08)

0.042

Predisposing factors

 Urinary catheter

9(39.1)

27(60.0)

2.33(0.84,6.52)

0.106

23(69.7)

3.58(1.17,10.96)

0.026

 Mechanical ventilation

2(8.7)

18(40.0)

7.00(1.46,33.59)

0.015

14(42.4)

7.74(1.55,38.56)

0.013

 Central venous catheter

5(21.7)

14(31.1)

1.63(0.50,5.26)

0.417

17(51.5)

3.83(1.15,12.74)

0.029

 Tracheostomy

1(4.3)

10(22.2)

6.29(0.75,52.56)

0.090

11(33.3)

11.00(1.31,92.63)

0.027

 Transfusion

1(4.3)

5(11.1)

2.75(0.30,25.05)

0.369

7(21.2)

5.92(0.68,51.92)

0.108

 Nasogastric intubation

4(17.4)

28(62.2)

7.82(2.27,26.91)

0.001

19(57.6)

6.45(1.79,23.19)

0.004

 Cephalosporin

12(52.2)

15(33.3)

0.46(0.16,1.27)

0.136

12(36.4)

0.53(0.17,1.55)

0.242

 β-lactam/β-lactamase inhibitor combinations

12(52.2)

24(53.3)

2.61(0.90,7.57)

0.077

12(36.4)

1.31(0.42,4.07)

0.645

 Quinolone

3(13.0)

19(42.2)

4.87(1.26,18.79)

0.022

10(30.3)

2.90(0.70,12.02)

0.143

 Carbapenem

4(17.4)

21(46.7)

4.16(1.22,14.18)

0.023

20(60.6)

7.31(2.02,26.40)

0.002

  1. aControl cases: 23 patients colonized or infected with carbapenem-susceptible Acinetobacter baumannii
  2. ICU intensive care unit