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Table 2- Multivariate logistic regression of potential predictors for extensively drug-resistant Acinetobacter baumannii acquisition during the study period

From: The effect of temporary closure and enhanced terminal disinfection using aerosolized hydrogen peroxide of an open-bay intensive care unit on the acquisition of extensively drug-resistant Acinetobacter baumannii

Variables Odds Ratio (95% Confidence Interval) P
Wound 3.72 (0.99–13.96) 0.05
Urinary catheter (≥ 5 d) 1.42 (0.42–4.79) 0.58
Mechanical ventilation 4.99 (1.76–14.15) 0.002
CCI score
0 0.71 (0.13–3.98) 0.70
5–6 2.55 (0.96–6.81) 0.06
7–8 0.48 (0.11–2.14) 0.34
XDR-AB contact pressure (≥ 3 d) 9.86 (3.65–26.64) < 0.0001
CAR use (≥ 4 d) 2.50 (0.43–14.36) 0.31
TZP use 2.86 (0.97–8.46) 0.06
CAR or TZP use (≥ 4 d) 0.58 (0.13–2.68) 0.49
LOS in the ICU (≥ 4 d) 1.29 (0.39–4.30) 0.68
Number of patients staying in the ICU during each numerical week after ETD
Week 6 3.37 (0.89–12.71) 0.07
Week 7 6.47 (1.21–34.50) 0.03
Week 8 0.30 (0.04–2.39) 0.26
Week 9 3.23 (0.59–17.75) 0.18
Week 10 0.12 (0.01–1.03) 0.053
Week 11 9.73 (1.66–57.12) 0.01
Week 12 2.65 (0.49–14.52) 0.26
Week 13 0.14 (0.02–1.24) 0.08
Week 14 14.37 (1.75–118.17) 0.01
Week 15 1.34 (0.11–15.85) 0.82
Week 16 3.33 (0.26–43.02) 0.36
  1. Variables included in the model: Urinary catheter (reference: < 5 d); Mechanical ventilation (reference: no); CCI score; XDR-AB contact pressure (reference: < 3 d); CAR (reference: < 4 d); TZP use (reference: no); CAR or TZP use (reference: < 4 d); LOS in the ICU (Reference: < 4 d); Number of patients staying in the ICU during each numerical week after ETD: Week 6 to Week 16 (reference: no)
  2. KEY = CAR Carbapenems, CCI Charlson Comorbidity Index, d days, ETD Enhanced Terminal Disinfection, ICU Intensive Care Unit, LOS: Length of Stay, TZP Piperacillin/Tazobactam, XDR-AB Extensively-drug resistant Acinetobacter bumannii