Table 1.

Distribution of cases selected by age and prostate volume.

	No. subjects
Age (y)
31–40	12
41–50	13
51–60	21
61–70	23
71–80	24
81–90	7
	100
Volume
21–30 cc	14
31–40 cc	14
41–50 cc	22
51–60 cc	15
61–70 cc	12
71–80 cc	10
81–90 cc	8
91–100 cc	5
	100