Validated tool for early prediction of intensive care unit admission in COVID-19 patients

Figure 7 Performances of the newly developed prediction models and traditional scoring systems for internal and external validation. A: The receiver operating characteristic (ROC) curve for the random forest (RF) model and the logistic regression (LR) model; B: Receiver operating characteristic curve for models RF, LR, A and B; C: The performance matrix comparison for the RF model and the LR model; D: The performance matrix for models RF, LR and A. Internal validation: A and C. External validation: B and D. The performance matrix of RF, LR and model A models are shown in blue, orange and green, respectively. AUC: Area under the receiver operating characteristic curve.