Table VII.

Influence of clinicopathological parameters on the prognosis of patients with esophageal squamous cell carcinoma.

	OS				PFS
Clinicopathological parameters	Mean survival (months)	Median survival (months)	Log rank (Mantel-Cox)	P-value	Mean survival (months)	Median survival (months)	Log rank (Mantel-Cox)	P-value
Age, years			0.087	0.768			0.122	0.726
≤60	27.682	24			21.197	16
>60	27.615	22			20.364	12
Sex			1.495	0.222			0.627	0.429
Male	26.485	24			20.224	13
Female	29.780	30			22.422	12
Ethnicity			0.033	0.857			0.178	0.673
Han	26.454	24			20.811	13
Kazakh	28.189	24			20.187	12
Tumor location			1.429	0.489			1.127	0.569
Upper	19.515	2			19.000	2
Middle	27.575	24			21.739	12
Lower	27.030	24			19.001	15
Tumor size			0.575	0.448			0.522	0.47
<3 cm	28.223	32			22.102	20
≥3 cm	26.943	20			20.169	12
Differentiation			4.314	0.116			1.678	0.432
Low	23.756	18			19.082	16
Medium	25.890	24			19.992	13
High	34.360	24			24.594	11
Depth of invasion			2.054	0.358			2.484	0.289
Mucosal	37.833	48			34.000	48
Muscle	28.697	24			20.375	12
Full	25.635	22			20.182	12
TNM stage			9.200	0.027			10.006	0.019
I	35.266	36			23.899	10
II	29.520	28			23.049	18
III	20.894	18			14.932	12
IV	19.756	13			12.427	9
Lymph node metastasis			6.270	0.012			6.698	0.010
No	30.248	31			23.134	18
Yes	22.128	15			15.776	12
Vascular invasion			1.670	0.196			0.349	0.555
No	28.826	24			21.083	12
Yes	22.719	22			18.200	12
Nerve invasion			10.255	0.001			3.990	0.046
No	30.223	24			22.089	14
Yes	18.567	10			16.090	10
Radiotherapy or chemotherapy			10.202	<0.001			3.185	0.074
No	23.157	18			24.228	12
Yes	35.152	28			18.907	18

OS, overall survival; PFS, progression-free survival.