Table 1: Highest annual percent of incidence and prevalence of ulcerative colitis (UC) and Crohn’s disease (CD) in the principal areas of the world.
| Continent | Incidence | Prevalence |
| Europe1 | 0.243 (UC) 0.127 (CD) |
5.05 (UC) 3.22 (CD) |
| North America1 | 0.192 (UC) 0.202 (CD) |
2.486 (UC) 3.18 (CD) |
| Asia and Middle East1 | 0.063 (UC) 0.05 (CD) |
1.683 (UC) 0.679 (CD) |
| Australia | 0.174 (UC)1 0.293 (CD)1 |
0.16 (UC)2 0.14 (CD)2 |
1Ref. 5; 2Data from the Final IBD Reportof Australian Crohn's and Colitis Association (ACCA) 2007.