Variables | No. | % | No. of BM | Incidence of BM | P value |
---|---|---|---|---|---|
Median age (years) | 63(32-89) | 36 | 19.1 | ||
Age | 0.077 | ||||
< 60 | 79 | 42.0 | 20 | 25.3 | |
≥ 60 | 109 | 58.0 | 16 | 14.7 | |
Gender | 0.002 | ||||
Male | 163 | 86.7 | 27 | 16.6 | |
Female | 25 | 13.3 | 9 | 36.0 | |
Stage | <0.001 | ||||
I | 15 | 7.9 | 1 | 6.7 | |
II | 24 | 12.8 | 1 | 4.2 | |
III | 96 | 51.1 | 12 | 12.5 | |
IV | 53 | 28.2 | 22 | 41.5 | |
T status | 0.36 | ||||
T1-2 | 121 | 64.4 | 25 | 20.6 | |
T3-4 | 67 | 35.6 | 11 | 16.4 | |
N status | 0.85 | ||||
N0-1 | 65 | 34.5 | 13 | 20.0 | |
N2-3 | 123 | 65.5 | 23 | 18.6 | |
EGFR status | - | ||||
Wild-type | 28 | 84.8 | 5 | 17.9 | |
Exon19 mutation | 3 | 9.1 | 0 | 0 | |
Exon 21 mutation | 2 | 6.1 | 0 | 0 | |
Histology | 0.033 | ||||
Squamous cell carcinoma | 175 | 93.1 | 32 | 18.3 | |
Adenosquamous carcinoma | 13 | 6.9 | 4 | 30.8 | |
Smoking history | 0.088a | ||||
Non-smoker | 45 | 23.9 | 12 | 26.7 | |
Current-smoker | 134 | 71.3 | 23 | 17.2 | |
Unknown | 9 | 4.8 | 1 | 11.1 | |
CEA | <0.001 | ||||
Normal | 126 | 67.1 | 14 | 11.1 | |
Elevated | 62 | 32.9 | 22 | 35.5 | |
NSE | 79 | 1.0 | |||
Normal | 89 | 47.3 | 17 | 19.1 | |
Elevated | 99 | 52.7 | 19 | 19.2 | |
Cyfra21-1 | 0.13 | ||||
Normal | 43 | 22.8 | 11 | 25.5 | |
Elevated | 145 | 77.2 | 25 | 17.2 | |
SCC | 80 | 0.68 | |||
Normal | 95 | 50.5 | 14 | 14.7 | |
Elevated | 93 | 49.5 | 12 | 12.9 |