Table 4.
Estimated discrimination in the validation set (c-index) across fifteen different simulated scenarios
| Scenario | Method | |||||
|---|---|---|---|---|---|---|
| Reference: untreated | Ignore treatment | Exclude treated | IPW | IPW, exclude | IPWtrunc exclude | |
| 1 | 0.67 (0.02) | 0.63 (0.02) | 0.65 (0.03) | 0.66 (0.03) | 0.66 (0.05) | 0.65 (0.04) |
| 2 | 0.67 (0.02) | 0.66 (0.02) | 0.67 (0.03) | 0.66 (0.02) | 0.67 (0.03) | 0.67 (0.03) |
| 3 | 0.67 (0.02) | 0.59 (0.03) | 0.65 (0.03) | 0.64 (0.03) | 0.66 (0.05) | 0.65 (0.04) |
| 4 | 0.67 (0.02) | 0.59 (0.03) | 0.60 (0.04) | 0.59 (0.08) | 0.57 (0.15) | 0.60 (0.05) |
| 5 | 0.67 (0.02) | 0.62 (0.02) | 0.65 (0.03) | 0.66 (0.03) | 0.67 (0.03) | 0.66 (0.03) |
| 6 | 0.67 (0.02) | 0.64 (0.02) | 0.65 (0.03) | 0.66 (0.03) | 0.66 (0.03) | 0.66 (0.03) |
| 7 | 0.67 (0.02) | 0.66 (0.02) | 0.65 (0.03) | 0.67 (0.03) | 0.67 (0.03) | 0.66 (0.03) |
| 8 | 0.67 (0.02) | 0.60 (0.03) | 0.65 (0.03) | 0.66 (0.03) | 0.66 (0.05) | 0.65 (0.04) |
| 9 | 0.67 (0.02) | 0.65 (0.02) | 0.65 (0.03) | 0.66 (0.03) | 0.66 (0.05) | 0.65 (0.04) |
| 10 | 0.67 (0.02) | 0.61 (0.03) | 0.65 (0.05) | 0.66 (0.05) | 0.66 (0.08) | 0.65 (0.06) |
| 11 | 0.67 (0.02) | 0.64 (0.03) | 0.65 (0.05) | 0.66 (0.05) | 0.66 (0.08) | 0.65 (0.06) |
| 12 | 0.67 (0.02) | 0.66 (0.02) | 0.65 (0.05) | 0.66 (0.04) | 0.66 (0.08) | 0.65 (0.06) |
| 13 | 0.66 (0.02) | 0.63 (0.02) | 0.63 (0.03) | 0.65 (0.03) | 0.64 (0.05) | 0.63 (0.04) |
| 14 | 0.65 (0.02) | 0.63 (0.02) | 0.60 (0.04) | 0.62 (0.03) | 0.61 (0.04) | 0.60 (0.04) |
| 15 | 0.62 (0.02) | 0.61 (0.03) | 0.57 (0.05) | 0.58 (0.03) | 0.57 (0.05) | 0.57 (0.05) |
Abbreviations: Exclude: exclusion of treated individuals from the analysis; IPW inverse (treatment) probability weighting; IPW trunc IPW with weight truncation at 98th percentile