Table 1.

Baseline Characteristics of all patients participating in Wheat Bran Fiber and the Ursodeoxycholic Acid Phase III polyp prevention trials

	WBF (N = 1304)	UDCA (N = 1193)
Age, mean (SD) (y)	65.7 ± 8.8	65.8 ± 8.5
Sex (%)
Male	66.8	67.5
Female	33.2	32.5
Mean no. of adenomas	1.5 ± 0.9	1.7 ± 1.1
Location (%)
Distal colorectum	46.8	37.2
Proximal only	31.8	36.7
Proximal and distal	15.3	19.7
Unknown	6.1	6.4
Size of largest adenoma, mean (SD) (mm)	8.3 ± 5.9	8.9 ± 5.9
Adenoma histology (%)
Tubular	78.7	79.3
Tubulovillous/villous	21.3	20.7