Table 1 Clinical characteristics of pLELCs and non-pLELC NSCLCs
Variables | pLELCs | Non-pLELC NSCLCs | P |
|---|---|---|---|
| Â | n (%) | n (%) | Â |
Age (mean ± SD, years) | 54.6 ± 9.5 | 60.2 ± 10.1 | <0.0001* |
Gender | Â | Â | Â |
 Female | 76 (59.4) | 56 (34.6) | <0.0001* |
 Male | 52 (40.6) | 106 (65.4) |  |
Smoking | Â | Â | Â |
 Yes | 26 (20.3) | 105 (64.8) | <0.0001* |
 No | 102 (79.7) | 57 (35.2) |  |
Family history of cancer | Â | Â | Â |
 Yes | 18 (14.1) | 21 (13.0) | 0.785 |
 No | 110 (85.9) | 141 (87.0) |  |
TNM stage (TNM data were available for only 104 pulmonary LELC cases) | |||
 T |  |  |  |
 1 | 28 (26.9) | 17 (10.5) | <0.0001* |
 2 | 23 (22.1) |  | 76 (46.9) |
 3 | 22 (21.2) |  | 44 (27.2) |
 4 | 31 (29.8) |  | 25 (15.4) |
 N |  |  |  |
 0 | 41 (39.4) | 81 (50.0) | 0.001* |
 1 | 13 (12.5) |  | 31 (19.1) |
 2 | 37 (35.6) |  | 47 (29.0) |
 3 | 13 (12.5) |  | 3 (1.9) |
0 + 1/2 + 3 | 54/50 (51.9/48.1) | 112/50 (69.1/30.9) | 0.005* |
 M |  |  |  |
 0 | 80 (76.9) | 152 (93.8) | <0.0001* |
 1 | 24 (23.1) |  | 10 (6.2) |
Clinical stage | Â | Â | Â |
 I | 25 (24.0) | 52 (32.1) | 0.001* |
 II | 18 (17.3) | 39 (24.1) |  |
 III | 37 (35.6) | 61 (37.6) |  |
 IV | 24 (23.1) | 10 (6.2) |  |
I + II/III + IV | 43/61 (41.3/58.7) | 91/71 (56.2/43.8) | 0.018* |
