Table 1.

Basic clinical information for all patients.

Variables	Mild/moderate, n=41	Severe, n=21	P
Age, year	39.07±14.11	43.81±12.66	0.201
Gender, Female (%)	24: 17	13: 8	0.623
Sutherland DAI score	7.05±2.12	11.48±0.51	0.000
Clinical activity index	8.24±1.79	13.57±3.61	0.000
Endoscopic index	6.41±1.77	9.38±1.91	0.000