Table 4 The 5-fold cross-validation results of the performance of the prediction models for CSS and OS in SCLC patients with liver metastasis
5-fold cross-validation | C-index (95% CI) | |||
|---|---|---|---|---|
CSS | OS | |||
Training set | Validation | Training set | Validation | |
First fold | 0.724 (0.716–0.732) | 0.719 (0.703–0.736) | 0.732 (0.724–0.739) | 0.727 (0.711–0.743) |
Second fold | 0.725 (0.717–0.733) | 0.717 (0.701–0.734) | 0.732 (0.724–0.739) | 0.730 (0.715–0.746) |
Third fold | 0.722 (0.714–0.730) | 0.728 (0.712–0.744) | 0.731 (0.723–0.739) | 0.732 (0.717–0.748) |
Forth fold | 0.723 (0.715–0.731) | 0.725 (0.709–0.742) | 0.731 (0.723–0.739) | 0.732 (0.716–0.748) |
Fifth fold | 0.723 (0.715–0.732) | 0.722 (0.706–0.738) | 0.735 (0.727–0.743) | 0.729 (0.713–0.745) |