An official website of the United States government
SIR Model Explorer
CLABSI, CAUTI, MRSA Bacteremia LabID, CDI LabID
CAUTI Risk Adjustment (IRFs)
The number of predicted CAUTIs under the 2022 baseline is calculated using a negative binomial regression model and is risk adjusted based on the following variables found to be statistically significant predictors of CAUTI incidence. Information about the statistical properties of NHSN risk adjustment models, including how the number of predicted events is calculated, is available in NHSN’s Guide to the SIR (2022 baseline) [PDF – 1MB].
| Parameter | Parameter Estimate | Standard Error | P-value |
| Intercept | -7.0380 | 0.0803 | <0.0001 |
| Proportion of admissions with other neurologic conditions1: <0.150 | 0.3583 | 0.0935 | 0.0001 |
| Proportion of admissions with other neurologic conditions1: ≥0.150 | REFERENT | – | – |
| Facility type (based on NHSN enrollment)2:
Critical Access Hospital (HOSP-CAH) Children’s Hospital (HOSP-CHLD) General Hospital (HOSP-GEN) Orthopedic Hospital (HOSP-ORTHO) Surgical Hospital (HOSP-SURG) |
0.4051 | 0.0747 | <0.0001 |
| Facility type (based on NHSN enrollment) 2:
Long-Term Acute Care Hospital (HOSP-LTAC) Inpatient Rehabilitation Facility (HOSP-REHAB) |
REFERENT | – | – |
| Proportion of admissions with stroke1: ≥0.250 | 0.2143 | 0.0780 | 0.0060 |
| Proportion of admissions with stroke1: <0.250 | REFERENT | – | – |
| Proportion of admissions with non-traumatic spinal cord dysfunction1: ≥0.064 | 0.3165 | 0.0802 | <0.0001 |
| Proportion of admissions with non-traumatic spinal cord dysfunction1: <0.064 | REFERENT | – | – |
| Proportion of admissions with brain dysfunction (non-traumatic or traumatic)1: ≥0.123 | 0.2074 | 0.0721 | 0.0040 |
| Proportion of admissions with brain dysfunction (non-traumatic or traumatic)1: <0.123 | REFERENT | – | – |
1 Proportion of annual admissions with primary diagnoses are taken from the Annual IRF Survey [PDF – 1MB] and are calculated as: # of admissions with the primary diagnosis (other neurologic conditions, stroke, non-traumatic spinal cord dysfunction, or brain dysfunction) / total # of annual admissions.
2 Indicative of an IRF unit within a non-rehab hospital, unless facility type is listed as HOSP-REHAB
