Predictive accuracy of 4C Mortality Score and Acute Physiology and Chronic Health Evaluation scores for mortality in COVID-19 patients admitted to intensive care unit

Figure 1 Participant flow chart. ICU: Intensive care unit; COVID: Coronavirus disease; +VE: Positive test for coronavirus disease.

Figure 2 Receiver operating characteristic curves. A: Comparing 4C Mortality Score at hospital and intensive care unit (ICU) admission. The area under the receiver operating characteristic curve is similar for ICU 4C score and Acute Physiology and Chronic Health Evaluation (APACHE) III. It is also similar for hospital 4C score and APACHE II. As show in Figure 3; B: Comparing APACHE II and APACHE III score. ICU: Intensive care unit; ROC: Receiver operating characteristic; APACHE: Acute Physiology and Chronic Health Evaluation.

Figure 3 Kaplan-Meier survival estimates. ICU: Intensive care unit.