Logistic regression analysis of risk factors for 30-day mortality.

Note: Data are presented as median value (interquartile range: Q1-Q3) for continuous variables and number of cases (%) for categorical variables. SCCmec, staphylococcal cassette chromosome mec; HA-MRSA, hospital-associated methicillin-resistant Staphylococcus aureus, defined as an isolate possessing SCCmec type I, II, or III; HAI, hospital-acquired infections; PVL, Panton-Valentine leucocidin; hVISA, vancomycin-heteroresistant S. aureus; MIC, minimum inhibitory concentration. aAll variables with a P value < 0.20 in the univariable analysis were considered for inclusion in the logistic regression model in the multivariable analysis. A forward stepwise selection process was utilized. It was found that only Pitt bacteraemia score, C-reactive protein level, white blood cell count, catheter-related infection as infection source, infection by MRSA with vancomycin MIC ≥ 2 μg/mL, infection by MRSA with vancomycin MIC ≥ 1.5 μg/mL and inappropriate therapy were statistically significant risk factors for 30-day mortality. Logistic regression analysis of risk factors for 30-day mortality.