Fig. 4

Receiver operator characteristic curves for cutoff values of CT scores with highest sensitivities and specificities. A Ichikado CT score of 172 has an 84.2% sensitivity and 79.7% specificity for predicting all-cause mortality; area under the curve (AUC) = 0.873. B Ichikado CT score of 170 has an 82.4% sensitivity and 79.3% specificity for predicting new requirement of invasive mechanical ventilation; AUC = 0.870