| Risk factors a | All baseline variables | GRACE score | TIMI score |
---|---|---|---|---|
Original models | ||||
C-index | 0.842 (0.813–0.871) | 0.845 (0.818–0.872) | 0.814 (0.780–0.848) | 0.776 (0.743–0.809) |
Original models + D-dimer (high, median, low) | ||||
C-index | 0.851 (0.823–0.879) | 0.853 (0.826–0.879) | 0.826 (0.794–0.859) | 0.804 (0.773–0.835) |
ΔC-index | 0.009 (0.001–0.016) | 0.008 (0.001–0.014) | 0.012 (0.001–0.024) | 0.028 (0.013–0.043) |
P difference | 0.019 | 0.021 | 0.027 | < 0.001 |
Original models + logarithmic D-dimer | ||||
C-index | 0.849 (0.821–0.877) | 0.851 (0.824–0.878) | 0.825 (0.793–0.857) | 0.800 (0.769–0.831) |
ΔC-index | 0.006 (0.001–0.012) | 0.006 (0.001–0.011) | 0.011 (0.002–0.020) | 0.024 (0.011–0.037) |
P difference | 0.020 | 0.021 | 0.015 | < 0.001 |