Table 1.

Demographic Characteristics of Healthy Control Subjects, Subjects with UC, and Subjects with UC Who Have Dysplasia

Characteristic	Healthy control subjects	Subjects with UC	Subjects with UC who have dysplasia
No.	5	4	13
Age, year, mean	46	48.3	46.2
Sex, male/female	5/0	5/0	12/1
Race, AA/C/A/U	2/3/0/0	0/3/0/1	1/8/1/3
Year of disease duration, median	NA	20	13.0
Displasia histology, LGD/HGD/adenocarcinoma	NA	NA	4/5/4
Left-sided colitis (%)	NA	2 (50)	1 (8)
Pancolitis (%)	NA	2 (50)	12 (92)

A, Asian; AA, African American; C, Caucasian; HGD, high-grade dysplasia; LGD, low-grade dysplasia; NA, not available; U, unidentified.