Table 3.
Comparison of RSF and Cox as survival submodels in the ADNI study.
| RSF | Cox | ||||
|---|---|---|---|---|---|
| t | Δt | AUC | BS | AUC | BS |
| MFPCA | |||||
| 1 | 1 | 0.860 | 0.076 | 0.878 | 0.085 |
| 1 | 2 | 0.923 | 0.150 | 0.912 | 0.163 |
| 2 | 1 | 0.942 | 0.086 | 0.911 | 0.096 |
| 2 | 2 | 0.922 | 0.128 | 0.903 | 0.136 |
| 3 | 1 | 0.844 | 0.052 | 0.865 | 0.058 |
| 3 | 2 | 0.899 | 0.097 | 0.902 | 0.106 |
| mFACEs | |||||
| 1 | 1 | 0.871 | 0.079 | 0.871 | 0.085 |
| 1 | 2 | 0.922 | 0.160 | 0.907 | 0.176 |
| 2 | 1 | 0.935 | 0.089 | 0.897 | 0.098 |
| 2 | 2 | 0.924 | 0.131 | 0.900 | 0.142 |
| 3 | 1 | 0.848 | 0.051 | 0.857 | 0.056 |
| 3 | 2 | 0.912 | 0.097 | 0.871 | 0.103 |
RSF, random survival forest; AUC, area under the curve; BS, Brier score; MFPCA, multivariate functional principal component analysis; mFACEs, multivariate fast covariance estimation.