Table 1.
Demographics and clinical characteristics of 279 patients in lung adenocarcinoma with the epidermal growth factor receptor (EGFR) mutation status.
| Variable | Wild Type (N = 110) n (%) |
EGFR Mutation (N = 169) n (%) |
p Value |
|---|---|---|---|
| Age | |||
| < 65 | 53 (48.2%) | 84 (49.7%) | p = 0.804 |
| ≥ 65 | 57 (51.8%) | 85 (50.3%) | |
| Mean ± SD | 65.36 ± 13.48 | 65.76 ± 13.57 | p = 0.817 |
| Gender | |||
| Male | 66 (60.0%) | 60 (35.5%) | p < 0.001 |
| Female | 44 (40.0%) | 109 (64.5%) | |
| Cigarette Smoking Status | |||
| Never-smoker | 49 (44.5%) | 131 (77.5%) | p < 0.001 |
| Ever-smoker | 61 (55.5%) | 38 (22.5%) | |
| Stage | |||
| I + II | 26 (23.4%) | 47 (27.8%) | p = 0.438 |
| III + IV | 84 (76.4%) | 122 (72.2%) | |
| Tumor T Status | |||
| T1 + T2 | 60 (54.5%) | 108 (63.9%) | p = 0.119 |
| T3 + T4 | 50 (45.5%) | 61 (36.1%) | |
| Lymph Node Status | |||
| Negative | 29 (26.4%) | 54 (32.0%) | p = 0.318 |
| Positive | 81 (73.6%) | 115 (68.0%) | |
| Distant Metastasis | |||
| Negative | 54 (49.1%) | 80 (47.3%) | p = 0.774 |
| Positive | 56 (50.9%) | 89 (52.7%) | |
| Cell Differentiation | |||
| Well | 8 (7.3%) | 21 (12.4%) | p = 0.001 |
| Moderately | 80 (72.7%) | 138 (81.7%) | |
| Poorly | 22 (20.0%) | 10 (5.9%) |