Standardised infection ratio (SIR) and Adjusted Ranking Metric (ARM) of hospital-onset unique blood source MRSA Laboratory-identified events (LabID events) among all inpatients in the facility.

Total number of observed hospital-onset unique blood source MRSA LabID events among all inpatients in the facility per National Healthcare Safety Network (NHSN) protocols.

Total number of predicted hospital-onset unique blood source MRSA LabID events, calculated from a negative binomial regression model and risk adjusted for facility's number of inpatient days, inpatient community-onset MRSA prevalence rate, average length of patient stay in the hospital, medical school affiliation, facility type, number of critical care beds in the hospital, and outpatient community-onset MRSA prevalence rate from emergency departments and observation units.

Data from patients who are not assigned to an inpatient bed in an applicable location are excluded from the denominator counts. Denominator counts exclude data from inpatient rehabilitation units and inpatient psychiatric units with different CMS Certification Numbers (CCN) from the acute care facility.

See denominator for risk adjustment details.

By hospital and state.

Hospital information submitted to the National Healthcare Safety Network (NHSN)

HAC Reduction Program data is displayed at data.cms.gov

www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/hospital-acquired-condition-reduction-program-hacrp

p4qm.org/measures/1716