Table 2 Univariate analysis of prognostic factors for OS of 153 patients
Parameter | Cases observed | OS | χ 2 value | P | |
|---|---|---|---|---|---|
3-year (%) | 5-year (%) | ||||
Age (year) | |||||
≤50 | 90 | 71.5 | 55.5 | ||
>50 | 63 | 39.4 | 22.8 | 13.360 | 0.000 |
Gender | |||||
Male | 128 | 57.1 | 42.9 | ||
Female | 25 | 59.2 | 23.7 | 1.401 | 0.237 |
Status of LN | |||||
Recurrence | 105 | 59.5 | 43.1 | ||
Residue | 48 | 50.9 | 33.9 | 1.642 | 0.200 |
rN stage | |||||
N1 | 109 | 67.7 | 47.0 | ||
N2 | 17 | 44.9 | 36.0 | ||
N3 | 27 | 20.7 | 15.6 | 40.152 | 0.000 |
Size of LN | |||||
≤3 cm | 80 | 67.5 | 52.4 | ||
3~6 cm | 47 | 58.9 | 34.7 | ||
>6 cm | 26 | 21.5 | 16.2 | 40.012 | 0.000 |
Bilateral of LN | |||||
Yes | 17 | 44.9 | 36.0 | ||
NO | 136 | 58.5 | 40.9 | 0.005 | 0.943 |
ECS | |||||
Yes | 111 | 51.8 | 35.7 | ||
No | 42 | 71.3 | 54.8 | 6.189 | 0.013 |
Level 1 or parotid metastasis | |||||
Yes | 27 | 54.8 | 38.4 | ||
No | 126 | 57.6 | 41.0 | 0.085 | 0.771 |
Surgical procedure | |||||
MRND | 89 | 66.3 | 47.9 | ||
RND/ERND | 64 | 44.3 | 30.5 | 11.823 | 0.001 |