Table 1. Clinical characteristics of patients.
| Variable | All (%) | Wild type (%) | L858R (%) | Del-19 (%) |
|---|---|---|---|---|
| Total patients | 261 | 118 | 70 | 73 |
| Gender | ||||
| Male | 131 (50.2) | 70 (59.32) | 24 (34.28) | 37 (50.69) |
| Female | 130 (49.8) | 48 (40.67) | 46 (65.72) | 36 (49.31) |
| Smoking status | ||||
| Non-smoker | 169 (66.3) | 62 (54.38) | 53 (75.71) | 54 (76.05) |
| Ex-smoker | 40 (15.7) | 23 (20.17) | 8 (11.42) | 9 (12.67) |
| Current smoker | 46 (18.0) | 29 (25.43) | 9 (12.85) | 8 (11.26) |
| Smoking years | ||||
| 0 | 169 (66.3) | 62 (54.38) | 53 (75.71) | 54 (76.05) |
| ≤20 | 23 (9.0) | 11 (9.64) | 7 (10.00) | 5 (7.04) |
| 21-40 | 41 (16.1) | 25 (21.92) | 7 (10.00) | 9 (12.67) |
| >40 | 22 (8.6) | 16 (14.03) | 3 (4.28) | 3 (4.22) |
| Dose of cigarette smoking | ||||
| 0 package | 169 (66.3) | 62 (54.38) | 53 (75.71) | 54 (76.05) |
| ≤20 packages | 28 (11.0) | 10 (8.77) | 9 (12.85) | 9 (12.67) |
| 21-40 packages | 26 (10.2) | 18 (13.15) | 5 (7.14) | 3 (4.22) |
| >40 packages | 32(12.6) | 24 (21.05) | 3 (4.28) | 5 (7.04) |
| Smoking-quitted for year | ||||
| Non-smoker | 169 (66.3) | 62 (54.38) | 53 (75.71) | 54 (76.05) |
| Quitted > 15 years | 14 (5.5) | 8 (7.01) | 3 (4.28) | 3 (4.22) |
| Quitted < 15 years | 26 (10.2) | 15 (13.15) | 5 (7.14) | 6 (8.45) |
| Current smoker | 46 (18.0) | 29 (25.43) | 9 (12.85) | 8 (11.26) |
| Histology type | ||||
| Adenocarcinoma | 249 (95.4) | 110 (93.22) | 68 (97.14) | 71 (97.26) |
| BAC | 12 (4.6) | 8 (6.77) | 2 (2.85) | 2 (2.73) |
| Stage | ||||
| I | 163 (62.5) | 67 (56.77) | 47 (67.14) | 49 (67.12) |
| II | 33 (12.6) | 21 (17.79) | 8 (11.42) | 4 (5.47) |
| IIIA | 65 (24.9) | 30 (25.42) | 15 (21.42) | 20 (27.39) |
| Mutation status | ||||
| Wild type | 118 (45.2) | 118 (100) | ||
| L858R | 70 (26.8) | 70(100) | ||
| Exon-19-deletion | 73 (28.0) | 73(100) |