TABLE 3

Hazard Ratios According to Prognostic Scoring System in PET Group (n = 136)

	Local control		Neck control		Distant metastasis		DFS		DSS		OS
Scoring system	P	HR (95% CI)	P	HR (95% CI)	P	HR (95% CI)	P	HR (95% CI)	P	HR (95% CI)	P	HR (95% CI)
Score 0 (n = 88 [65%])		1.0 (reference)		1.0 (reference)		1.0 (reference)		1.0 (reference)		1.0 (reference)		1.0 (reference)
Score 1 (n = 44 [32%])	NS	—	NS	—	0.007	3.7 (1.4–9.6)	0.022	2.5 (1.1–5.5)	0.004	4.3 (1.6–11.6)	0.003	3.4 (1.5–7.6)
Score 2 (n = 4 [3%])	NS	—	<0.001	47.7 (11.1–204.0)	<0.001	35.7 (9.6–132.3)	<0.001	21.6 (5.7–71.4)	<0.001	36.7 (9.8–137.1)	<0.001	20.3 (6.1–67.2)

DFS = disease free survival; DSS = disease specific survival; OS = overall survival; HR = hazard ratio; CI = confidence interval; NS = not significant.