Multivariate analysis of postrecurrence survival in 106 patients with resected stage I non-small cell lung cancer with single organ metastasis
| Variables | HR | 95% CI | p Value |
| Disease-free interval, months | |||
| ≤16 | 1 | ||
| >16 | 0.534 | 0.288 to 0.990 | 0.046 |
| Treatment for distant metastasis | |||
| No | 1 | ||
| Yes | 0.245 | 0.089 to 0.673 | 0.006 |