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Charting the Course: 2022 NHSN HAI Rebaseline
The NHSN Team is updating the national baseline used to calculate all healthcare-associated infections (HAI) standardized infection ratios (SIRs) and standardized utilization ratios (SURs) in the Patient Safety Component. This process of updating the national baseline, referred to as the “Rebaseline,” involves the NHSN team analyzing national data and creating updated risk adjustment models to be used in the calculations of future SIR and SUR denominators.
Refer to the resources above for additional information, FAQs, training opportunities, and a link to the NHSN Team’s Rebaseline Progress Tracker, where you can track the progress on model creation, implementation into NHSN, and other aspects of the project.
The NHSN team remains committed to working with facilities to improve HAI prevention. Measuring progress under an updated national standard is important to understanding prevention efforts and standards in the current healthcare environment. The newly baselined data will continue to drive patient safety and the effort to reduce HAI rates.
| Facility Type | HAIs analyzed for potential SIR models | Device types analyzed for potential SUR models |
| Acute Care Hospitals (ACHs) | CLABSI (including separate risk adjustment for NICUs, MBIs, and SCAs/ONCs) CAUTI, VAE, pediatric VAE, SSI, MRSA Blood LabID, CDI LabID | Central line, central line NICU, central line SCA, pediatric ventilator, pediatric ventilator NICU, urinary catheter, ventilator |
| Critical Access Hospitals (CAHs) | CLABSI, CAUTI, VAE, SSI, MRSA Blood LabID, CDI LabID | Central line, urinary catheter, ventilator |
| Inpatient Rehabilitation Facilities (IRFs) | CLABSI, CAUTI, VAE, SSI, MRSA Blood LabID, CDI LabID | Central line, urinary catheter, ventilator |
| Long-term Acute Care Hospitals (LTACHs) | CLABSI, CAUTI, VAE, SSI, MRSA Blood LabID, CDI LabID | Central line, urinary catheter, ventilator |
SSI SIR model inclusion criteria are detailed in the Analysis section of the NHSN SSI Protocol: Surgical Site Infection (cdc.gov) [PDF – 586 KB] The list of NHSN operative procedure categories is in Table 2 of the same document.
