. 2021 Dec 7;8:777370. doi: 10.3389/fmolb.2021.777370

TABLE 2.

Univariate Kaplan–Meier analyses of prognostic parameters in 114 patients with ESCC.

	—	N	95% CI
	—	N	Lower	Upper	p-value
Sex	Female	32	44.344	59.210	0.048
Sex	Male	82	37.524	47.943	0.048
Age group	<65 years	85	41.353	51.432	0.357
Age group	≥65 years	29	33.415	50.281	0.357
Tumor stage	T1 or T2	46	50.219	60.281	0.001
Tumor stage	T3 or T4	68	32.621	44.444	0.001
Lymph node metastasis	N0	51	47.522	58.686	0.002
Lymph node metastasis	Nx	63	33.024	44.976	0.002
Grades of differentiation	G1 or G2	93	39.684	49.429	0.979
Grades of differentiation	G3	9	26.669	56.183	0.979
UICC stage	I or II	64	47.030	56.931	0.001
UICC stage	III or IV	50	29.825	43.627	0.001
PD-1H expression	Low	85	37.550	47.429	0.029
PD-1H expression	High	29	45.389	60.823	0.029

CI, confidence interval; HR, hazard ratio; UICC, union for international cancer control; PD-1H, programmed death-1 homolog; ESCC, esophageal squamous cell carcinoma.