Table 1.

Characteristic data of 150 patients with PSC categorized by baseline stage of liver fibrosis

Variables Median (Interquartile range; IQR) or Number (%)	Mild liver fibrosis (N=88)	Advanced liver fibrosis (N= 62)	P value*
Age (years)	44.6 (35.4, 53.3)	48.7 (40, 58.1)	0.09
Gender, % male	52 (59.1)	34 (54.8)	0.60
Patients with history of IBD	69 (78.4)	46 (74.2)	0.55
Mayo risk score at baseline	−0.004 (−0.50, 0.64)	0.73 (0.21, 1.35)	<0.0001*
Treatment with Ursodeoxycholic acid	47 (53.4)	29 (46.8)	0.42
Presence of varices at baseline	6 (6.8)	20 (32.3)	<0.0001*

Note:

^*P value < 0.05 for mild liver fibrosis vs. advanced liver fibrosis, and those variables with a P value < 0.2 by univariate analysis and were not used for Mayo risk score calculation were included in multivariate analysis. The Wilcoxon rank sum test was used for continuous variables and the Chi-square test was used to determine statistical significance for categorical data.