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

Published in final edited form as: Head Neck. 2019 Feb 18;41(4):857–864. doi: 10.1002/hed.25336

Table 2.

Kaplan-Meier estimated HR of outcomes by AJCC 7^th and 8^th Ed. clinical stage.

		AJCC 8^th Ed.
OS, HR (95% CI)	Stage I	Reference
	Stage II	1.54 (0.8 – 3.0)
	Stage III	4.07 (2.5 – 6.8)
LRRFS, HR (95% CI)	Stage I	Reference
	Stage II	0.95 (0.5 – 2.0)
	Stage III	1.41 (0.8 – 2.6)
DRFS, HR (95% CI)	Stage I	Reference
	Stage II	0.97 (0.4 – 2.3)
	Stage III	3.70 (2.1 – 6.6)

HR = hazard ratio. CI = confidence interval. OS = overall survival. LRRFS = locoregional recurrence-free survival. DRFS = distant recurrence-free survival.