. Author manuscript; available in PMC: 2023 Jan 1.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2022 Jan 1;112(1):83–92. doi: 10.1016/j.ijrobp.2021.07.004

Table 2.

Proportion of Patients with Improved IIEF Q1 (Erectile Dysfunction)

	3D-CRT/IMRT 70.2 Gy	3D-CRT/IMRT 79.2 Gy	p-value

Month 6	(n=322)	(n=315)
Not improved	301 (93.5%)	303 (96.2%)	0.12
Improved	21 (6.5%)	12 (3.8%)
Month 12	(n=373)	(n=363)
Not improved	343 (92.0%)	336 (92.6%)	0.76
Improved	30 (8.0%)	27 (7.4%)
Month 24	(n=342)	(n=354)
Not improved	323 (94.4%)	336 (94.9%)	0.78
Improved	19 (5.6%)	18 (5.1%)

IIEF = International Index of Erectile Dysfunction; 3D-CRT = 3-dimensional – conventional radiation therapy; IMRT=intensity modulated radiation therapy; Gy=Gray.

Hochberg multiplicity adjustment employed based off of an overall significance level of 0.05.