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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: J Am Med Dir Assoc. 2019 Mar 7;20(4):444–450.e2. doi: 10.1016/j.jamda.2019.01.137

Figure 2.

Figure 2.

Performance results for the GBM model, Charlson Comorbidity Index, and Length of Stay were compared by using corresponding ROC curves on out-of-sample observations via 10-fold cross-validation, along with 95% pointwise confidence bands (obtained via 1,000 bootstrap samples). AUC indicates area under the receiver-operator curve; CCI, Charlson Comorbidity Index; GBM, gradient boosting machine; LOS, length of stay; ROC, receiver operating curve.