Table 3 Multivariate analysis of 5-year survival in young Chinese LSCC patients after surgery

Smoking (current or former/never)

1.788

1.171

2.331

0.127

5.976 (0.602–59.298)

Histologic grade (non-poor/poor)

−0.390

0.755

0.266

0.606

0.677 (0.154–2.976)

Tumor location (larynx, glottic/larynx, nonglottic)

0.528

0.844

0.390

0.532

1.695 (0.324–8.868)

The largest size (≤3 cm/>3 cm)

−3.350

1.152

8.460

0.004

0.035 (0.004–0.335)

TNM stage (I + II/III + IV)

−2.442

1.066

5.245

0.022

0.087 (0.011–0.703)

Lymph node metastasis (absent/present)

−3.148

1.150

7.492

0.006

0.043 (0.005–0.409)