Relationship between categorical variables and survival of patients with surgically resected pathological stage I nonsmall cell lung cancer
| Variable | p-value |
| Sex | 0.31 |
| Age ≥70 yrsversus <70 yrs | 0.01 |
| Weight loss | 0.31 |
| T1versus T2 | 0.01 |
| Location rightversus left | 0.19 |
| Surgery lobectomyversus pneumonectomy | 0.15 |
| R0versus R1 | 0.08 |
| Histology | 0.12 |