Table 2.

Performance of U-survival and the reference predictors in the prediction of the outcomes of COVID-19 for the subcohorts where all of the available patients were used for each predictor.

The table shows C-index values and their 95% confidence intervals (CI) obtained by per-patient bootstrapping with 1000 replicates in the prediction of disease progression (left) and mortality (right). “Patients” columns show the number of patients used for each predictor. The P values were obtained by application of a bootstrap hypothesis test.

%S-WAL percentage of well-aerated lung parenchyma.