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Table 3 Multivariable analysis for multiresistant Acetinobacter baumannii carriage at ICU admission and acquisition during hospitalization

From: The importance of colonization pressure in multiresistant Acinetobacter baumannii acquisition in a Greek intensive care unit

Variable for A. baumannii carriage at ICU admissiona   Multivariable analysis
for A. baumannii acquisitionbc
  OR (95% CI) P value OR (95% CI) P value
Infection at ICU admission 11.03 (3.56-34.18) < 0.01   
Days in hospital before ICU admission 1.09 (1.01-1.16) 0.02   
Medical reason for ICU admission    5.11 (1.31-19.93) 0.02
Days of antibiotics before acquisition    1.24 (1.12-1.38) < 0.01
Days of mechanical ventilation before acquisition    1.08 (1.04-1.13) < 0.01
  1. aThe best two-variable model with deviance 92.9 and Hosmer-Lemeshow test, χ2 = 0.92; P = 0.1. bThe best three-variable model with deviance 132.3 and Hosmer-Lemeshow test, χ2 = 11.62; P = 0.17. cFactors not analyzed in the multivariable analysis for multiresistant A. baumannii acquisition: (a) duration of enteral feeding tube, of arterial and urinary tract catheterization during hospitalization due to collinearity with duration of mechanical ventilation, and (b) antibiotic use and mechanical ventilation before acquisition, as they were found in all patients with acquisition. Propofol administration was not analyzed in the multivariable analysis for acquisition, as categoric variable, because of clinical criteria. CI, confidence interval; CVC, central venous catheter; ICU, intensive care unit; ODIN, Organ Dysfunctions and/or Infection; OR, odds ratio.