Model performance | Development cohort | External cohorts | |
---|---|---|---|
PREP | PIERS | PETRA | |
PREP-S model | N = 946 | N = 339 |  |
C-statistic (95% CI) |  |  | – |
 At 48 hours | 0.84 (0.81–0.87)b | 0.75 (0.69–0.81)a |  |
 At 1 week | 0.79 (0.76–0.81)b | 0.72 (0.68–0.76)a |  |
 Overall | 0.75 (0.73–0.78)b,c | 0.71 (0.67–0.75)a |  |
Calibration slope (95% CI) |  |  | – |
 At 48 hours | 1 | 0.80 (0.62–0.99) |  |
 At 1 week | 1 | 0.75 (0.61–0.89) |  |
 Overall | 1 | 0.67 (0.56–0.79) |  |
PREP-L model | N = 946 | N = 437 | N = 211 |
C-statistic (95% CI) | 0.82 (0.80, 0.84)b,d | 0.81 (0.77–0.85)a | 0.75 (0.64–0.86)a |
Calibration slope (95% CI) | 1 | 0.93 (0.72–1.13) | 0.90 (0.48–1.32) |