Table 4.

Multivariate Model for Progression-Free Survival from Pulsed Reduced-Dose Rate

Variable	HR	95% CI	P-value
KPS decrease during PRDR (decrease, n = 22; vs. same or increase, n = 36)	2.4	1.3–4.3	.006
Time from diagnosis to first progression (< 5 years, n = 28; vs. ≥ 5 years, n = 30)	2.2	1.2–3.8	.008
Surgery within 4 months of PRDR (within 4 months, n = 28; vs. ≥ 4 months or no surgery, n = 30)	0.5	1.7–10.4	.018