Table 1. Clinical and Laboratory Characteristics of the Study Patients at Entry.

Characteristic	Bile Acid Analysis (n= 56 )	No Bile Acid Analysis (n= 94 )	p value
Age, years	41.8 (17.8-75.5)	49.3 (20.3-73.6)	0.0017
Duration of disease, years	0.69 (0.04-7.5)	1.62 (0.005-49.5)	0.09
Female sex, n (%)	23 (41)	41 (44)	0.76
Colitis, n (%)	52 (93)	63 (68)	0.0004
Varices, n (%)	8 (14)	18 (19)	0.36
Histologic stage, n (%)
I	15 (26)	35 (38)	0.09
II	20 (35)	20 (22)	0.07
III	13 (23)	24 (26)	0.54
IV	10 (18)	13 (14)	0.47
Alkaline phosphatase*	4.0 (1.2-12.5)	3.3 (0.52-26.9)	0.25
Aspartate aminotransferase*	1.6 (0.6-4)	1.9 (0.5-8.0)	0.12
Bilirubin, mg/dL*	0.9 (0.3-4.5)	1 (0.3-7.2)	0.18
Mayo risk score	0.015 [(−1.05)-1.8]	0.58 [(−1.4)-2.4]	0.0015

Data are presented as the median (range) unless otherwise indicated.

^*Values represent multiples of the upper limits of normal.