Table 1.

Ethnicity distribution of ulcerative colitis (2008-2010) and total gastrointestinal patients (2005-2010)

Ethnicity	2005	2006	2007	2008	2009	2010	Total	%Total	UC	UC	Annual Incidence
Thai	18820	20093	20256	23423	24224	23456	130272	49%	69	19%	32
Oriental	5333	6737	7060	8237	8614	9614	45595	17%	23	6%	29
South Asian	2329	2206	2003	2344	2566	2935	14383	5%	33	9%	140
Middle Eastern	4567	5831	6418	7828	7726	9483	41853	16%	155	42%	206
Caucasian	4088	4712	5264	5209	5658	5572	30503	11%	86	23%	174
African	488	598	836	1050	1287	1193	5452	2%	5	1%	47
Hispanic	44	86	60	73	67	77	407	0%	0	0%	0
Total	35669	40263	41897	48164	50142	52330	268465		371		821

¹Overall annual incidence was calculated from UC cases identified from all patients during 2008-2010 and therefore was not equal to the column average annual incidence. UC: Ulcerative colitis.