Table 6.
Sensitivity analysis comparing the overall predictive accuracy (measured as C-index and Calibration Chi-square statistics) for LCAs with different model specifications
|
Model |
Model Features |
C index |
Calibration Chi-square |
||
|---|---|---|---|---|---|
| OHTS | EGPS | OHTS | EGPS | ||
| 0 |
Cox mode with baseline factors only |
0.778 |
0.706 |
5.0 |
2.1 |
| 1 |
LCA with a quadratic within-class functional form |
0.821 |
0.719 |
11.3 |
7.0 |
| 2 |
LCA with a linear within-class functional form |
0.825 |
0.720 |
10.2 |
4.9 |
| 3 | LCA with a constant within-class functional form | 0.823 | 0.727 | 10.5 | 13.5 |