. Author manuscript; available in PMC: 2014 Oct 23.

Published in final edited form as: Cancer. 2008 May 1;112(9):2030–2037. doi: 10.1002/cncr.23399

Table 2.

Comparison of survival outcomes for patients treated with IFN vs. No IFN stratified by substage

Substage	Outcomes	IFN		No IFN
Substage	Outcomes	5-Year	95% CI	5-Year	95% CI
IIIA	DDFS	0.73	(0.64, 0.91)	0.66	(0.55, 0.8)
	RFS	0.7	(0.56, 0.87)	0.61	(0.50, 0.74)
	OS	0.76	(0.63, 0.91)	0.71	(0.6, 0.84)
IIIB	DDFS	0.49	(0.37, 0.65)	0.42	(0.35, 0.52)
	RFS	0.39	(0.28, 0.56)	0.36	(0.29, 0.46)
	OS	0.64	(0.52, 0.79)	0.46	(0.38, 0.56)
IIIC	DDFS	0.29	(0.17, 0.48)	0.35	(0.27, 0.45)
	RFS	0.2	(0.1, 0.38)	0.3	(0.22, 0.39)
	OS	0.37	(0.24, 0.56)	0.44	(0.35, 0.54)

Abbreviations: IFN: Interferon; DDFS: Distant disease-free survival; DFS: Disease-free survival; OS: Overall survival