Table 2.
Variables | n | Score | P value | ||
---|---|---|---|---|---|
Low (0–2) | Moderate (3–4) | High (5–6) | |||
Age, years | |||||
<55 | 29 | 19 | 8 | 2 | 0.779 |
≥55 | 37 | 23 | 10 | 4 | |
Gender | |||||
Male | 34 | 22 | 9 | 3 | 0.852 |
Female | 32 | 20 | 9 | 3 | |
Smoking | |||||
Smoking | 41 | 25 | 12 | 4 | 0.565 |
Non-smoking | 25 | 17 | 6 | 2 | |
TNM clinical stage | |||||
I–II | 21 | 9 | 7 | 5 | 0.165 |
III–IV | 45 | 33 | 11 | 1 | |
Primary tumor (T) stage | |||||
T1–T2 | 37 | 27 | 7 | 3 | 0.075 |
T3–T4 | 29 | 15 | 11 | 3 | |
Regional lymph node metastasis (N) | |||||
N0 | 29 | 14 | 10 | 5 | 0.022* |
N1, N2, N3 | 37 | 28 | 8 | 1 | |
Distant metastasis (M) | |||||
M0 | 52 | 30 | 16 | 6 | 0.053 |
M1 | 14 | 12 | 2 | 0 |
*P < 0.05 by χ 2 test