Multivariate HR of overall survival according to surgical resection by stage (n=2013)
| Stage | n=2013 | Surgical resection vs no surgical resection (ref) | |
|---|---|---|---|
| Adjusted HR (95% CI)* | p Value* | ||
| Ia/Ib | 451 | 0.360 (0.104 to 1.237) | 0.105 |
| IIa/IIb | 110 | 0.723 (0.205 to 2.542) | 0.613 |
| IIIa | 288 | 0.513 (0.352 to 0.748) | 0.001 |
| IIIb/IV | 1164 | 0.646 (0.536 to 0.779) | 0.000 |
*Adjusted HR, 95% CI and p value were estimated using the multiple Cox regression model adjusted by sex, age group and histology type.