Characteristics of the Study Population Stratified by Appropriateness of Empiric Therapy.

Note. Data are no. (%) of admissions, unless otherwise indicated. IQR, interquartile range; MRSA, methicillin-resistant Staphylococcus aureus; ICU, intensive care unit; SD, standard deviation; MIC, minimum inhibitory concentration. Polymicrobial infection was defined as more than one microorganism present from the same blood culture.
aOnly the first 6 months of 2007 were assessed.