Long-term follow-up of ulcerative colitis patients treated on the basis of their cytomegalovirus antigen status

Table 1 Characteristics of the study population (n = 118)

Characteristics	CMV Ag+ (n = 40)	CMV Ag- (n = 78)	Pvalue
Gender			0.009
Male	26	31
Female	14	47
Age(yr), median (range)	45 (14-79)	36 (12-87)	0.10
Duration of disease (yr), median (range)	1.5 (0.1-28)	4.6 (0-38)	0.23
Disease activity			0.191
Mild	2	8
Moderate	15	35
Severe	23	35
Lichtiger’s CAI, median (range)	11 (7-19)	13 (7-21)	0.15
Extent of disease			0.31
Total colitis	33	58
Left-sided	7	20
Dose of prednisolone (mg/d), median (range)	35 (0-80)	20 (0-100)	0.0003
Follow-up period (yr), median (range)	3.2 (0.1-9.3)	2.8 (0.1-9.7)	0.66

¹Overall P value. By χ² test, Fisher’s exact test, and Mann-Whitney U test. CMV Ag: Cytomegalovirus antigenemia assay; CAI: Clinical activity index.