Table 1. Clinical characteristics of 80 patients with esophageal squamous cell carcinoma.

Characteristics	Number	Percent (%)
Gender
Male	68	85
Female	12	15
Age (years)
≤58	46	57.5
>58	34	42.5
Histologic grade
G1	15	18.75
G2	38	47.5
G3	18	22.5
GX	9	11.25
Tumor stage
T1	7	8.75
T2	29	36.25
T3	40	50
T4	4	5
Node stage
N0	42	52.5
N1 + N2	30	37.5
NX	8	10
Metastasis stage
M0	70	87.5
M1	5	6.25
MX	5	6.25
Pathologic stage
I	7	8.75
II	46	57.5
III	22	27.5
IV	4	5
–	1	1.25
Survival status
No	24	30
Yes	56	70