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Table 4 Risk factors for time to in-hospital MRSA infections

From: Impact of active screening for methicillin-resistant Staphylococcus aureus (MRSA) and decolonization on MRSA infections, mortality and medical cost: a quasi-experimental study in surgical intensive care unit

Univariate Cox regression analysis

Multiple Cox regression analysis

Variable

HR (95% CI)

P value

Adjusted HR (95% CI)

P value

Age >65 (years)

1.5 (0.7-3.4)

0.307

  

Sex

1.0 (0.5-2.2)

0.972

  

pre-ICU LOS

1.0 (1.0-1.0)

0.680

  

Operation

1.1 (0.4-2.6)

0.913

  

CVC catheter

1.1 (0.5-2.4)

0.858

  

Foley catheter

1.0 (0.4-2.3)

0.994

  

Double lumen catheter

1.5 (0.4-5.2)

0.505

  

APACHE II >15

2.1 (1.0-4.6)

0.066

2.3 (1.0-5.3)

0.037

Endotracheal intubation

1.7 (0.8-3.9)

0.177

  

Antibiotic use

1.2 (0.5-2.8)

0.657

  

Hand hygienea,b

0.9 (0.8-1.0)

0.051

  

VAP bundle

0.3 (0.1-0.9)

0.025

  

Intervention

0.3 (0.1-0.7)

0.010

0.3 (0.1-0.7)

0.006

  1. aHand hygiene: the amount of alcoholic disinfectant (liter) used for hand washing per 1,000 patient days during a period. b P = 0.597 for the interaction between intervention and hand hygiene. APACHE II: Acute Physiology and Chronic Health Evaluation II; CVC: central venous catheter; HR: hazard ratio; ICU LOS: ICU length of hospital stay; MRSA: methicillin-resistant Staphylococcus aureus; VAP: ventilator-associated pneumonia.