# of studies reporting psychometric properties: 2
Interpretability
-
Higher scores equal better prognosis.
MCID: not established in SCI
SEM: not established in SCI
MDC: not established in SCI
Typical values: Mean (Range) Scores:
- All patients: 12.2 (11.9-12.5)
- Patients w/ PUs at any stage (n=80) = 11.6 (11.2-12.0)
- Patients w/o PUs at any stage (n=64) = 13.1 (12.6-13.6)
(Ash 2002; n=144; mean time from injury to discharge = 152 (range: 9–506) days)
Threshold values have not been established for SCI. But for the general population, a score of < 14 has been suggested to identify individuals at risk for developing pressure sores (Norton et al. 1962). However, there is currently no research evidence to support this value.
Reliability
No values have been reported at this time for the reliability of the Norton Pressure Ulcer Risk Scale for the SCI population.
Validity
- Low correlation with Stirling’s Pressure Ulcer Severity Scale:
r=-0.28
- Moderate correlation with Waterlow Pressure Ulcer Scale:
r= -050 to -0.56
- Moderate correlation with Braden Scale:
r= 0.48-0.49
(Wellard & Lo 2000: n=60; individuals with SCI and 1+ PU admission to hospital; mean (SD) length of stay in the hospital = 91 (98) days)
Responsiveness
No values were reported for the responsiveness of the Norton Pressure Ulcer Risk Scale for the SCI population.
Floor/Ceiling Effect
Floor effect: 86% determined as no risk, 8% at risk, 2% at high risk
(Wellard & Lo 2000: n=60; individuals with SCI and 1+ PU admission to hospital; mean (SD) length of stay in the hospital = 91 (98) days)
Reviewers
Dr. Carlos L. Cano-Herrera, Elsa Sun
Date Last Updated
31 December 2024