Table 4.

Four-year freedom from grade ≥2 genitourinary toxicity stratified by dose to median volume of bladder-clinical target volume (n = 89)

	Genitourinary Toxicity
V70 Gy < 5% (vs. ≥5)	93% vs. 88%, P = .21
V65 Gy < 27%	90% vs. 90%, P = .62
V60 Gy < 37%	91% vs. 89%, P = .52
V50 Gy < 50%	91% vs. 90%, P = .61