COVID-19 Research Paper Volume 12, Issue 19 pp 18822—18832
Development and validation of a prediction model for early identification of critically ill elderly COVID-19 patients
Nomogram and calibration curves for predicting the risk of critically illness among COVID-19 patients. (A) Nomogram model for predicting the risk of critically ill cases among COVID-19 patients. (B) Calibration curves for the nomogram in the development cohort. (C) Calibration curves for the nomogram in the internal validation cohort. (D) Calibration curves for the nomogram in the external validation cohort.