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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