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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