. Author manuscript; available in PMC: 2020 Feb 1.

Published in final edited form as: Am J Clin Oncol. 2019 Feb;42(2):160–165. doi: 10.1097/COC.0000000000000486

Table 2:

Cox proportional hazards model for risk of death stratified by stage according to the AJCC 7^th and 8^th editions (n = 6,427)

	Stage	n	Hazard Ratio for Death		95% CI	5-year Overall Survival (%)
AJCC 7^th Edition	IA	240	reference			65.87
	IB	2,143	1.19	0.94	1.50	63.03
	IIA	256	1.89	1.42	2.51	47.26
	IIB	636	1.40	1.09	1.81	60.94
	III	2,129	2.68	2.12	3.38	36.97
	IV	1,023	7.52	5.94	9.52	12.66
AJCC 8^th Edition	IA	240	reference			65.87
	IB	2,143	1.19	0.94	1.50	63.03
	II	256	1.88	1.42	2.51	47.26
	IIIA	608	1.84	1.43	2.37	49.46
	IIIB	2,157	2.47	1.96	3.12	39.92
	IV	1,023	7.49	5.92	9.48	12.66

CI: Confidence interval; AJCC: American Joint Committee on Cancer