Table 1.
Clinical characteristics of pLELCs and non-pLELC NSCLCs
| Variables | pLELCs | Non-pLELC NSCLCs | P |
|---|---|---|---|
| n (%) | n (%) | ||
| Age (mean ± SD, years) | 54.6 ± 9.5 | 60.2 ± 10.1 | <0.0001* |
| Gender | |||
| Female | 76 (59.4) | 56 (34.6) | <0.0001* |
| Male | 52 (40.6) | 106 (65.4) | |
| Smoking | |||
| Yes | 26 (20.3) | 105 (64.8) | <0.0001* |
| No | 102 (79.7) | 57 (35.2) | |
| Family history of cancer | |||
| 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 | |||
| 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* |
*P < 0.05 with significant difference