Abstract: Disclosed is a method and system for analyzing patient hospitalization data to determine a Nosocomial Infection Marker (NIM), the method comprising receiving from a database hospitalization data associated with at least one patient, calculating from the hospitalization data the number of specimens with non-duplicate hospital isolates (SNDHI) markers, calculating from the hospitalization data antibiotic utilization criteria (AUC) markers, and determining the nosocomial infection marker (NIM) for each patient, based upon the calculated. SNDHI and AUC markers.

Abstract: A method of determining an Antibiotic Utilization Criteria (AUC) marker includes assigning an AUC=1 to a patient if certain criteria are met: (1) antimicrobials were first dispensed to the patient after an initial number of days has passed since the patient's admission to a hospital, and either (2a) the antimicrobials were dispensed to the patient for a determined number of consecutive days after the day of first dispense, or (2b) the antimicrobials were dispensed to the patient on consecutive days after the day of first dispense up to and including the day on which the patient either was discharged or died. If criteria (1) is not satisfied or both of alternate criteria (2a) and (2b) are not satisfied, an AUC=0 is assigned to the patient.