TABLE 3.

Univariate Cox Regression Analysis of Overall Survival

Characteristics	No. Patients	Overall Survival
		HR (95% CI)	P
Sex
Female (reference)	34	1.00
Male	50	1.35 (0.78–2.34)	0.28
Age	84	1.02 (0.99–1.06)	0.15
Tumor differentiation
Well-moderate (reference)	58	1.00
Poor	26	1.16 (0.64–2.12)	0.63
pT stage (AJCC 8th edition)			0.09
pT1 (reference)	12	1.00
pT2	61	2.89 (1.13–7.42)	0.03
pT3	11	2.46 (0.77–7.86)	0.13
pN stage (AJCC 8th edition)			0.02
pN0 (reference)	16	1.00
pN1	32	2.47 (0.93–6.55)	0.07
pN2	36	3.85 (1.45–10.19)	0.007
Margin
Negative (reference)	75	1.00
Positive	9	5.29 (2.26–12.4)	<0.001
PERK expression
Low (reference)	42	1.00
High	42	1.77 (1.00–3.12)	0.05
p-eIF2α Expression
Low (reference)	37	1.00
High	47	1.94 (1.08–3.50)	0.03