Single nucleotide polymorphisms in the mitochondrial displacement loop and outcome of esophageal squamous cell carcinoma

Table 1 Univariate analysis of clinical characteristics associated with post-operational survival in ESCC patients

Characteristics		No. cases	5 years survival rate (%)	p value
Gender				0.129
	Male	37	35.10
	Female	23	47.80
Age (years)				0.282
	≤ 55	17	23.50
	> 55	43	46.50
TNM classification^a				0.012
	I	12	75
	II	33	36.40
	III	15	20
Lymphatic metastases				0.418
	Yes	12	33.30
	No	48	41.70

^aThe survival in each stage was compared as I versus II, I versus III and II versus III

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