Preoperative sorting of circulating T lymphocytes in patients with esophageal squamous cell carcinoma: Its prognostic significance

Table 2 Relationship between serum CD8 value and clinico-pathological features (mean±SD), n (%)

	Group H-CD8	Group L-CD8	P
Variables	(n = 64)	(n = 70)
Gender
Male	58 (90.6)	60 (85.7)	0.543
Female	6 (9.4)	10 (14.3)
Age	63.4+9.6	61.6+9.1	0.265
Location of tumor
Upper	9 (14.1)	14 (20.0)	0.635
Middle	38 (59.4)	40 (57.1)
Lower	17 (26.5)	16 (22.9)
Degree of differentiation
Well	4 (6.3)	6 (8.6)	0.810
Moderately	53 (82.8)	55 (78.6)
Poorly	7 (10.9)	9 (12.8)
Tumor size (cm)	5.4+2.4	5.3+2.8	0.930
Depth of tumor
Tis	2 (3.1)	2 (2.8)	0.899
T1a	4 (6.3)	7 (10.0)
T1b	11 (17.2)	13 (18.6)
T2	10 (15.6)	13 (18.6)
T3	26 (40.6)	22 (31.4)
T4	11 (17.2)	13 (18.6)
Lymph nodes metastasis
Positive	29 (45.3)	26 (37.1)	0.382
Negative	35 (54.7)	44 (62.9)
Lymphatic invasion
Positive	11 (17.2)	19 (27.1)	0.241
Negative	53 (82.8)	51 (72.9)
Venous invasion
Positive	9 (14.1)	7 (10.0)	0.647
Negative	55 (85.9)	63 (90.0)
TNM stage
0	2 (3.1)	2 (2.8)	0.858
I	12 (18.8)	16 (22.9)
IIA	15 (23.4)	19 (27.1)
IIB	8 (12.5)	10 (14.3)
III	27 (42.2)	23 (32.9)
Curability
Curative resection	51 (79.7)	57 (81.4)	0.830
Non curative resection	13 (20.3)	13 (18.6)

Well = well differentiated squamous cell carcinoma; Moderately = moderately differentiated squamous cell carcinoma; Poorly = poorly differentiated squamous cell carcinoma.