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| Variables | HR | 95% CI | P value | RS |
|---|---|---|---|---|
| Symptom at initial recurrence | 0.000 | 1.5 | ||
| No | 1 | |||
| Yes | 3.154 | 2.000–4.972 | ||
| Resection type | 0.003 | 1.0 | ||
| Lobectomy | 1 | |||
| Bilobectomy/pneumonectomy | 2.039 | 1.281–3.244 | ||
| Histologic grade | 0.000 | 1.5 | ||
| Poor | 3.125 | 1.976–4.941 | ||
| Moderate/well | 1 | |||
| Post-recurrence therapy | 0.001 | 1.1 | ||
| No | 2.330 | 1.393–3.899 | ||
| Yes | 1 |
HR, hazard ratio; CI, confidence interval; RS, risk score.
