Table 2.

Changes in mean IPSS-total, IPSS-irritative, and IPSS-obstructive, from baseline following SBRT for prostate cancer

	Pre	1 mo	3 mo	6 mo	9 mo	12 mo	18 mo	24 mo	36 mo
IPSS-Total
Mean	10.48	13.38	10.64	10.20	10.33	11.11	10.59	9.00	8.55
Mean difference		2.90	0.16	−0.28	−0.15	0.63	0.11	−1.48	−1.94
p-value		< .001	1	1	1	1	1	1	.478
IPSS-irritative
Mean	5.21	6.97	5.86	5.45	5.51	5.77	5.41	5.09	4.81
Mean difference		1.76	0.65	0.24	0.30	0.56	0.20	−0.12	−0.40
p-value		< .001	1	1	1	1	1	1	1
IPSS-obstructive
Mean	5.31	6.45	4.92	4.82	4.85	5.31	5.20	4.00	3.74
Mean difference		1.14	−0.39	−0.49	−0.46	0.00	−0.10	−1.31	−1.56
p-value		0.344	1	1	1	1	1	0.134	.035