Table 1.

Demographic and Clinicopathologic Characteristics of 56 Japanese Patients with Esophageal Squamous Cell Carcinoma

Characteristics	Values
Age, yr	64.3±7.5 (48 -78)
Height, cm	163.1±6.7 (150-180)
Weight, kg	55.9±9.4 (33-79)
Sex	Male/Female = 51/5
Race	Japanese
Performance status	0/1/2/unknown = 28/22/4/2
Histological type	squamous cell carcinoma
Differentiation	well/moderate/poor/unknown = 8/31/9/8
TNM score	T1/T2/T3/T4 = 17/6/21/12
	N0/N1 = 23/33
	M0/M1a = 45/11
Stage	I/II/III/IVa = 13/10/22/11

The values are the mean±SD, with the range in parentheses. TNM score: tumor, node, metastasis. Patients with noncervical primary tumors with positive supraclavicular lymph nodes were defined as M1a.