Difference in DRB1* gene polymorphisms between Han and Uyghur ulcerative colitis patients in China

Table 2 Clinical characteristics of the study subjects n (%)

Characteristics	UC patients	Controls	P value
Total number (n)	102	310
Han	53	161	0.998
Uyghur	49	149	0.998
Gender, M/F	47/55	137/173	0.740
Age of onset1, yr	48.07 ± 15.83	47.37 ± 14.49	0.801
Extensive colitis (Han)	20 (38)
Extensive colitis (Uyghur)	30 (61)
Distal colitis (Han)	33 (62)
Mild and intermediate	47 (89)
Severe	6 (11)
Distal colitis (Uyghur)	19 (39)
Mild and intermediate	40 (82)
Severe	9 (18)

¹Data are expressed as mean ± SD. UC: Ulcerative colitis.