Table 3.

Characteristics of patients with ESCC (n = 127)

Variables	NRF2			SLC7A11
	Low (66)	High (61)	P-value	Negative (65)	Positive (62)	P-value
Sex			0.189			0.728
Male	38	42		40	40
Female	28	19		25	22
Age			0.284			0.872
≤ 60	15	19		17	17
> 60	51	42		48	45
Alcohol abuse			0.372			0.698
Yes	22	25		23	24
No	44	36		42	38
Smoking			0.803			0.665
Yes	31	30		30	31
No	35	31		35	31
Location			0.971			0.632
Upper	29	27		30	26
Middle/lower	37	34		35	36
Length, cm			0.035			0.623
≤ 4	35	21		27	29
> 4	31	40		38	33
T stage			0.790			0.728
T1–2	12	10		12	10
T3–4	54	51		53	52
Lymph node metastasis			0.037			0.014
N0–1	59	46		59	46
N2–3	7	15		6	16
Metastasis			0.057			0.333
M0	56	58		60	54
M1	10	3		5	8
TNM stage			0.015			0.378
I–II	22	9		18	13
III–IV	44	52		47	49