Table 2.

Independent Prognostic Factors

	HR1	%95 CI2	p value
Age
>65	1
≥65	1.6	1.0-2.4	0.034
Stage
3A	1
3B	1.6	1.1-2.4	0.018
Treatment
SequentialCT+RT	1
Concurrent CRT	0.5	0.3-0.9	0.025
RT dose
<60 Gy	1
≥60 Gy	0.3	0.1-0.5	<0.001

HR, hazard ratio; CI, confidence interval