“…A recent study applied six diverse machine learning algorithms to a cohort of 7,717 Intensive Care Unit (ICU) patients and reported a C-statistic of 0.83 ( 11 ), while another study reported a C-statistic of 0.84 for a general hospital population of 8,286 observations using logistic regression with under-sampling of the control patients during model fitting ( 12 ). Other studies include: (1) application of Bayesian Network approaches to the aforementioned cohort of 7,717 ICU patients, achieving a similar C-statistic of 0.83 as before, while improving sensitivity and adding model interpretation through modeling of related risk factors (e.g., medications, diagnoses, and Braden scale factors) ( 13 ), (2) a random forest model which leveraged predictors curated from clinical input and previous literature to predict stage 1 HAPI and above with a C-statistic of 0.79 ( 14 ), (3) another logistic regression which leveraged ICU-specific features to obtain a recall of 0.74 ( 15 ), and (4) other modeling approaches built off of Electronic Medical Records (EMR) and claims data, an online AI platform and another logistic regression model (after comparison between six machine learning methods), obtaining a C-statistic of 0.84 and recall of 0.67, respectively ( 16 , 17 ). In the Supplementary Material , we have included a table which summarizes these studies for the purpose of comparison to the current study's findings ( Supplementary Table 1 ).…”