Table 1 Clinical features of all 603 NSCLC patients included in this study
Features | GSE37745 (n = 196) | GSE31210 (n = 226) | GSE50081 (n = 181) | |
|---|---|---|---|---|
Age (years), no (%) | ||||
 ≤65 | 94 (48.0) | 176 (77.9) | 59 (32.6) | |
 >65 | 102 (52.0) | 50 (22.1) | 122 (67.4) | |
Gender, no (%) | ||||
 Male | 107 (55.0) | 105 (46.5) | 98 (54.1) | |
 Female | 89 (45.0) | 121 (53.5) | 83 (45.9) | |
Vital status (%) | ||||
 Alive | 52 (26.5) | 191 (84.5) | 106 (58.6) | |
 Dead | 144 (73.5) | 35 (15.5) | 75 (41.4) | |
Disease stage, no (%) | ||||
 I | 130 (66.0) | 168 (74.3) | 127 (70.2) | |
 II | 35 (18.0) | 58 (25.7) | 54 (29.8) | |
 III | 27 (14.0) |  |  | |
 IV | 4 (2.0) |  |  | |
Smoking status | ||||
 Never-smoker |  | 115 (50.9) | 24 (13.3) | |
 Ever-smoker |  | 111 (49.1) | 79 (43.6) | |
 Current |  |  | 54 (29.8) | |
 Undetermined |  |  | 21 (11.6) | |
Histology | ||||
 Adenocarcinoma | 106 (54.0) | 226 | 128 (70.7) | |
 Large cell carcinoma | 24 (12.0) |  | 7 (3.9) | |
 Squamous cell carcinoma | 66 (34.0) |  | 43 (23.9) | |