Table 2 Optimism-corrected calibration and discrimination indices of the prognostic model for each of the outcomes. The 95% bootstrapped confidence intervals are presented within parenthesis
From: Development of a prognostic model of COVID-19 severity: a population-based cohort study in Iceland
Indexes | Urgent care visit | Hospitalization | Intensive care unit admission or death |
|---|---|---|---|
C-statistic | 0.793 (0.789 to 0.797) | ||
Negalkerke’s R2 | 0.234 (0.227 to 0.242) | ||
Calibration intercept | -0.043 (-0.064 to -0.023) | -0.063 (-0.094 to -0.033) | -0.098 (-0.155 to -0.042) |
Calibration slope | 0.973 (0.963 to 0.983) | ||
Brier score | 0.092 (0.091 to 0.093) | 0.039 (0.038 to 0.039) | 0.010 (0.010 to 0.010) |
Emax | 0.014 (0.008 to 0.020) | 0.018 (0.010 to 0.027) | 0.027 (0.013 to 0.041) |