Table 4 Univariate and multivariate Cox regression analyses of overall survival in hypopharyngeal carcinoma patients

Age

1.270

0.545–2.959

0.579

Smoking

23.005

0.033-15986.427

0.348

Gender

21.037

0.000-3708102.146

0.621

Pathological stage

1.790

0.532–6.030

0.347

Lymphatic metastasis

5.650

2.007–15.907

0.001**

3.355

1.175–9.584

0.024*

Pathological differentiation

0.607

0.261–1.411

0.246

Expression of PKM2

5.908

2.010-17.368

0.001**

3.935

1.281–12.090

0.017*