Implementable prediction for pressure injuries in hospitalized adults: model development and validation (Preprint)

Author:

Reese Thomas J.ORCID,Domenico Henry J.,Hernandez Antonio,Byrne Daniel W.,Moore Ryan P.,Williams Jessica B.,Douthit Brian J.,Russo Elise,McCoy Allison B.,Ivory Catherine H.,Steitz Bryan D.,Wright Adam

Abstract

BACKGROUND

Numerous pressure injury prediction models have been developed using electronic health record data. Yet, hospital-acquired pressure injuries (HAPIs) are increasing, which demonstrates the critical challenge of implementing these models in routine care.

OBJECTIVE

To help bridge the gap between development and implementation, we sought to create a model that was feasible, broadly applicable, dynamic, actionable, and rigorously validated and then compare its performance to usual care (i.e., Braden Scale).

METHODS

We extracted electronic health record data from 197,991 adult hospital admissions with 51 candidate features. For risk prediction and feature selection, we used logistic regression with a least absolute shrinkage and selection operator (LASSO) approach. To compare the model with usual care, we used the area under the receiver operating curve (AUC), Brier Score, slope, intercept, and Integrated Calibration Index. The model was validated using a temporally staggered cohort.

RESULTS

A total of 5,458 HAPIs were identified between January 2018 and July 2022. We determined 22 features were necessary to achieve a parsimonious and highly accurate model. The top five features included tracheostomy, edema, central line, first albumin measure, and age. Our model achieved higher discrimination than the Braden Scale (AUC, 0.897; 95% CI, 0.893 to 0.901 versus AUC, 0.798; 95% CI, 0.791 to 0.803).

CONCLUSIONS

We developed and validated an accurate prediction model for HAPIs that surpassed the standard-of-care risk assessment and fulfilled necessary elements for implementation. Future work includes a pragmatic randomized trial to assess whether our model improves patient outcomes.

Publisher

JMIR Publications Inc.

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