Table 2.

Multivariate analysis for overall survival (OS).

Variable		OS
		p	HR (95% CI)
No of visible blood vessels	<median vs ≥median	0.02	2.4 [1.2–5.0]
Radiotherapy dose∗	range 30–60 Gy	0.64	1.0 [0.9–1.1]
Chemotherapy	yes vs no	0.66	0.8 [0.4–1.8]
Karnofsky performance score	<70% vs ≥70%	0.01	3.0 [1.3–6.9]

^∗Continuous variable; HR, hazard ratio; CI, confidence interval.