The Survival and Prognosis Characteristics of Primary Esophageal Small-Cell Carcinoma

Table 2

Univariate analysis of factors affecting OS of patients with PSCCE.

	Number	Median OS (m)		value
Gender			0.001	0.97
Male	69	36
Female	50	23
Age (year)			1.277	0.259
≤60	68	32
>60	51	19
Tumor local			1.509	0.47
Upper	10	23
Middle	93	26
Lower	16	20
pTNM stage			7.23	0.007
I-IIb	59	38
≥IIIa	60	19
pT stage			7.844	0.049
1	33	38
2	35	36
3	50	19
4	1	8
Lymph node metastasis			8.32	0.004
Negative	53	48
Positive	66	19
Therapy			3.31	0.191
Surgery only	65	21
Surgery with chemotherapy	41	36	3.272	0.07
Surgery with chemoradiotherapy	13	19

OS: overall survival; T: tumor; N: regional lymph node; M: metastasis.