Table 1 The clinical characteristics of all 313 eligible patients
Characteristic | N | % |
|---|---|---|
Sex | ||
Male | 230 | 73.4 |
Female | 83 | 26.5 |
Age(y) | ||
Median (range) | 50(19–70) |  |
 ≥ 50 | 159 | 50.7 |
 < 50 | 154 | 49.2 |
Tumor category | ||
T1 | 63 | 20.1 |
T2 | 67 | 21.4 |
T3 | 119 | 38.0 |
T4 | 64 | 20.4 |
Node category | ||
N0 | 28 | 8.9 |
N1 | 101 | 32.2 |
N2 | 114 | 36.4 |
N3 | 70 | 22.3 |
Clinical stage | ||
I | 13 | 4.1 |
II | 34 | 10.8 |
III | 140 | 44.7 |
IVa | 126 | 40.2 |
EGFR expression | ||
Positive | 241 | 77.0 |
Negative | 72 | 23.0 |
SUVmax-t | ||
Mean ± SD | 10.21 ± 5.59 |  |
SUVmax-n | ||
Mean ± SD | 7.53 ± 5.55 |  |