TTF-1 positive (n = 139) | TTF-1 negative (n = 34) | Total (n = 173) | P value | |
---|---|---|---|---|
Age (mean ± SD), years | 65.8 ± 11.4 | 66.4 ± 12.8 | 65.9 ± 11.7 | 0.787 |
< 70 | 75 (81.5) | 17 (18.5) | 92 (53.2) | 0.679 |
= or > 70 | 64 (79.0) | 17 (21.0) | 81 (46.8) | |
Female, no. (%) | 62 (91.2) | 6 (8.8) | 68 (39.3) | 0.004 |
Smoking status, no. (%) | 0.001 | |||
Never smoker | 69 (92.0) | 6 (8.0) | 75 (43.4) | |
Current or former smoker | 70 (71.4) | 28 (28.6) | 98 (56.6) | |
Stage, no. (%) | 0.745 | |||
M1a | 41 (78.8) | 11 (21.2) | 52 (30.1) | |
M1b | 98 (81.0) | 23 (19.0) | 121 (69.9) | |
ECOG status, no. (%) | 0.009 | |||
0 | 67 (89.3) | 8 (10.7) | 75 (43.4) | |
1–2 | 72 (73.5) | 26 (26.5) | 98 (56.6) | |
EGFR sensitizing mutation, no. (%) | < 0.001 | |||
Wild-type | 60 (67.4) | 29 (32.6) | 89 (51.4) | |
Mutation | 79 (94.0) | 5 (6.0) | 84 (48.6) |