The Shieh Score as a Risk Assessment Tool for Hospital-Acquired Pressure Injuries: A Retrospective Cohort Study

OBJECTIVE: To design a new risk assessment tool to identify patients at high risk for hospital-acquired pressure injuries. METHODS: The researchers developed the Shieh Score using retrospective data of 406,032 hospital admissions from January 2014 to December 2016 with 1,299 pressure injury cases from the pressure injury registry. A decision tree and best subset logistic regression were used to select predictors from demographic and clinical candidate variables, which were then used to construct the Shieh Score. RESULTS: The final Shieh Score included the following measures: sex, age, diabetes, glomerular filtration rate, albumin level, level of function, use of IV norepinephrine, mechanical ventilation, and level of consciousness. The Shieh Score had a higher Youden Index, specificity, and positive predictive value than the Braden Scale. However, the Braden Scale had a higher sensitivity compared with the Shieh Score. CONCLUSIONS: The Shieh Score is an alternative risk assessment tool that may effectively identify a smaller number of patients at high risk for hospital-acquired pressure injuries with a higher specificity and positive predictive value than the Braden Scale.