Table 2.

Survival results

	BEV, % (95% CI)	BEV/pRDR, % (95% CI)	P value	Hazard ratio
6-mo OS	69 (54–81)	97 (80–100)	.0030	10.83
12-mo OS	34 (20–48)	73 (53–86)	.0008	3.48
18-mo OS	24 (12–38)	42 (24–59)	.0013	2.18
24-mo OS	11 (3–23)	19 (7–35)	.0016	1.85
6-mo PFS	36 (22–50)	82 (63–92)	<.0001	5.68
12-mo PFS	16 (6–29)	56 (36–72)	<.0001	3.84
18-mo PFS	9 (2–21)	22 (9–39)	.0002	2.58
24-mo PFS	3 (0–13)	15 (5–31)	.0002	2.51

Abbreviations: CI = confidence interval; OS = overall survival; PFS = progression-free survival; pRDR = pulsed reduced dose rate radiation therapy.

Percent OS and PFS at 6, 12, 18, and 24 months were significantly better in the BEV/pRDR group compared to the BEV group.