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. 2022 Apr 21;4(6):e415–e425. doi: 10.1016/S2589-7500(22)00049-8

Figure 3.

Figure 3

Kaplan-Meier curves in the stratified survival analysis

In-hospital mortality (A) and mechanical ventilation (B) in the multi-hospital test set of the Cerner Real-World COVID-19 Q3 Dataset. In-hospital mortality (C) and mechanical ventilation (D) in the test set of the Optum deidentified COVID-19 electronic health record dataset. Stratification of patients is according to their predicted survival score over time in days since admission. Shaded areas indicate 95% CIs calculated on the logarithmic scale from the SEs of the Kaplan–Meier estimator with the centre values corresponding to the Kaplan–Meier estimate.