Table 1 Baseline characteristics of patients with lung adenocarcinoma in the training cohort
Variable | Baseline characteristics (n = 751) |
|---|---|
Affymetrix® platform | |
 HG-U133 Plus 2.0 (GPL570) | 313 (41.7) |
 HG-U133A (GPL96) | 438 (58.3) |
Age | 64.6 ± 10.0 |
Sex | |
 Male | 394 (52.5) |
 Female | 357 (47.5) |
Tumor stage | |
 Stage I | 515 (68.6) |
 Stage II–III | 232 (30.9) |
 Stage IV | 4 (0.5) |
Smoking status | |
 Current smoker | 67 (8.9) |
 Ex-smoker | 322 (42.9) |
 Non-smoker | 71 (9.5) |
 Unknown | 291 (38.7) |
Adjuvant chemotherapy | |
 Yes | 102 (13.6) |
 No | 377 (50.2) |
 Unknown | 272 (36.2) |