Table 5 Multivariate analysis of clinicopathological factors for 2 year progression-free survival (PFS) of 85 patients with ESCC

Age

≥60 vs <60 years

1.500 (0.626-3.596)

0.363

Tumor differentiation

Poor vs Well/Moderate

1.607 (0.658-3.925)

0.296

T status

T3 ~ 4 vs T1 ~ 2

1.963 (0.814-4.733)

0.131

Lymph metastasis

N₁/N₂/N₃vs N₀

3.111 (1.276-7.583)

0.011*

Clinical stage

III/IV vs I/II

3.046 (1.255-7.395)

0.013*

STC-1 expression in PB and/or BM

Positive vs Negtive

3.348 (1.372-8.172)

0.007*

KPS scores

≥90 vs < 90

0.691 (0.281-1.703)

0.422