Skip to main content

Table 2 Cox regression analysis for the probability of MDRO decolonization

From: Duration of colonization with and risk factors for prolonged carriage of multidrug resistant organisms among residents in long-term care facilities

Variable Univariate regression analysis Multivariate regression analysis
Raw HR 95%CI P value Adjusted HR 95%CI P value
Agec 1.00 0.96–1.04 0.831 1.01 0.97–1.06 0.532
Gendera, c 1.36a 0.71–2.58a 0.352a 1.92a 0.90–4.09a 0.093a
Origin of caseb 1.26b 0.57–2.74b 0.569b    
Type of indwelling devices, N(%)
 Nasogastric tube 0.97 0.50–1.91 0.939    
 Foley catheterc 1.69 0.88–3.22 0.114    
 Tracheostomy 0.82 0.34–1.96 0.649    
Type of MDROs, N(%)
 VRE 0.66 0.35–1.26 0.209    
 MRSA 0.90 0.37–2.18 0.818    
 MDRAB 0.88 0.34–2.27 0.792    
 CRGNBc 2.46 1.13–5.33 0.023    
Charlson comorbidity index scorec 0.89 0.79–1.01 0.064 0.86 0.76–0.98 0.02
Underlying comorbidity
 Dementia 0.62 0.22–1.77 0.367    
 Cerebrovascular disease 1.35 0.68–2.67 0.389    
 Cardiovascular diseases 0.77 0.41–1.47 0.434    
 Chronic lung disease 1.52 0.80–2.90 0.203    
 Moderate or severe renal disease 0.82 0.43–1.59 0.562    
 Diabetes mellitus 0.81 0.43–1.52 0.504    
 Peptic ulcer diseasec 1.57 0.82–3.00 0.176    
 Cancerc 0.51 0.20–1.30 0.156    
 Moderate or severe liver disease 1.28 0.45–3.68 0.644    
  1. MRSA Methicillin-resistant Staphylococcus aureus; MDRAB Multidrug-resistant Acinetobacter baumannii; CRGNB Carbapenem-resistant gram-negative bacilli
  2. aComparison between male and female subjects (reference)
  3. bComparison of cases originating from the long-term care facility and cases originating from hospitals (reference)
  4. cage, gender and variables with a p value less than 0.2 in the univariate model were included in the multivariate model