Table 3 Multivariate Cox regression analysis in patients with ESCC

Tumor location

 Upper

1

1

 Middle

1.091

0.585–2.036

1.014

0.545–1.885

 Lower

1.133

0.496–2.588

1.501

0.691–3.258

Clinical T stage

 T1

–

–

1

 T2

–

–

0.739

0.281–1.943

 T3

–

–

1.492

0.543–4.103

 T4

–

–

0.794

0.248–2.539

SUV_Tumor

1.040

0.993–1.089

1.049

0.999–1.102

MTV (cm³)

1.018

1.006–1.031

1.019

1.005–1.034

PLNS number

1.013

0.940–1.091

–

–

SD_max(LN-T)

6.988

2.119–23.042

5.819

1.921–17.628