Table 2. Univariable analysis of overall and disease-free survival in 191 patients with pIA NSCLC.
| Characteristic | DFS | OS | |||
|---|---|---|---|---|---|
| χ2 | P | χ2 | P | ||
| Sex | 0.000 | 0.989 | 0.440 | 0.507 | |
| Age (y) | 2.529 | 0.112 | 7.484 | 0.006 | |
| Tumor marker level | 1.966 | 0.374 | 1.210 | 0.546 | |
| pT stage, No. (%) | 10.540 | 0.005 | 5.217 | 0.074 | |
| Surgical technique | 0.408 | 0.523 | 0.174 | 0.677 | |
| Operative procedure | 0.004 | 0.951 | 0.747 | 0.387 | |
| Predominant subtype | 3.580 | 0.058 | 2.695 | 0.101 | |
| Tumor location | 1.920 | 0.750 | 1.143 | 0.887 | |
| Type of LND | 2.266 | 0.132 | 5.238 | 0.022 | |
NSCLC, non-small cell lung cancer; LND, lymph node dissection; OS, overall survival; DFS, disease-free survival.