Table 3.

Univariate analysis for local control

Variable	Level	HR	95% CI	P
Age		1.02	0.97–1.08	0.35
ECOG	1–3 v 0	2.50	0.29–21.80	0.41
Prior treatment	Yes vs. No	0.53	0.10–2.81	0.45
Tumor size (cm)		0.87	0.65–1.17	0.36
Fractionation	15/25 vs. 5	0.39	0.07–1.99	0.26
BED, GyE ±		0.97	0.93–1.00	0.057

ECOG Eastern Cooperative Oncology Group performance status, BED biological equivalent dose, HR hazard ratio, GyE Gy equivalent

 ± BED considered as a continuous variable. The HR represents the effect of an increase of 1 GyE