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Table 1 Demographic characteristics of nosocomial bacteremia patients infected with high MIC or low MIC MRSA

From: Nosocomial methicillin-resistant Staphylococcus aureus (MRSA) bacteremia in Taiwan: Mortality analyses and the impact of vancomycin, MIC = 2 mg/L, by the broth microdilution method

Characteristic Vancomycin MIC < 2 N = 97 Number of patients (%) Vancomycin MIC = 2 N = 26 Number of patients (%) p-valuea p-valueb; OR (95% CI)
Elderly (>65 years old) 66 (68.0) 13 (50.0) 0.088  
Age 70.32 ± 14.1 63.6 ± 18.0 0.250  
Sex: male 68 (70.1) 14 (53.8) 0.118 0.04; 0.33 (0.11-0.95)
Diabetes 70 (72.2) 17 (65.4) 0.500  
Cancer 30 (30.9) 11(43.2) 0.349  
Congestive heart failure 14 (14.4) 4(15.4) 1.000  
End stage renal disease 10 (10.3) 4 (15.4) 0.492  
Liver cirrhosis 11 (11.3) 3 (11.5) 1.000  
Cerebrovascular disease 24 (24.7) 3 (11.5) 0.188  
Bedridden 24 (24.7) 7 (26.9) 0.804  
Recent surgery 24 (24.7) 3 (11.5) 0.188 0.018; 0.15 (0.03-0.73)
Recent cardio-thoracic surgery 13 (13.4) 1 (3.8) 0.297  
Hospitalization days before bacteremia 22.6 ± 10.1 23.7 ± 8.0 0.207  
ICU admission before bacteremia 40 (41.2) 17 (65.4) 0.028 0.005; 4.83 (1.61-14.50)
Hospitalization > 2 months before bactermia 17 (17.5) 10 (38.5) 0.022 0.011; 4.56 (1.41-14.73)
Hospitalization > 1 month before bacteremia 41 (42.3) 15 (57.7) 0.187  
  1. a: p-value calculated using a χ2 test or Fisher's exact test
  2. b: p-value as determined by logistic regression.