Table 6. Comparison of AUROCs between different risk models used to predict one- year mortality.
| AUROC (95% CI) | ||||
|---|---|---|---|---|
| DC | IVC | TVC | NTTD | |
| n = 40,117 | n = 8,244 | n = 4,248 | n = 1,194 | |
| IHTSA | 0.65 (0.64–0.66) | 0.62 (0.61–0.64) | 0.64 (0.62–0.67) | 0.59 (0.47–0.72) |
| DRI | 0.56 (0.56–0.57) † | 0.56 (0.54–0.57) † | 0.59 (0.57–0.61) † | 0.55 (0.43–0.68) |
| IMPACT | 0.61 (0.60–0.61) † | 0.59 (0.58–0.61) † | 0.65 (0.63–0.67) | 0.52 (0.38–0.66) |
| RSS | 0.61 (0.61–0.62) † | 0.60 (0.59–0.62)* | 0.66 (0.64–0.68) | 0.58 (0.45–0.71) |
*p < 0.05
†p < 0.001 compared with ITHSA. AUROC, area under the receiver operating curve; CI, confidence interval; DC, derivation cohort; DRI, donor risk index for transplantation (reported in the paper by Weiss et al. [6]); IMPACT, index for mortality prediction after cardiac transplantation (reported in the paper by Weiss et al. [7]); ITHSA, international heart transplantation survival algorithm; IVC, internal validation cohort; NTTD, Nordic thoracic transplantation database; RSS, risk stratification score (reported in the paper by Hong et al. [9]); TVC, temporal validation cohort.