Abstract 286
| Centre 1 (n = 1102) | Centre 2 (n = 693) | |||
|---|---|---|---|---|
| UC | CD | UC | CD | |
| *IBD not yet classified: 10% Centre 1; 8% Centre 2. | ||||
| †Centre 1 current smokers; Centre 2 smoking at presentation. | ||||
| Disease %* | 49 | 41 | 48 | 44 |
| Prevalence/100000 (n) | 195 | 165 | 133 | 122 |
| Males (%) | 53 | 44 | 51 | 42 |
| Median duration (months) | 86 | 109 | 144 | 157 |
| Smokers† (%) | 9 | 25 | 18 | 51 |
| Crohn’s (CD) Colonic (%) | – | 37 | – | 37 |
| CD ileo-colonic | – | 33 | – | 42 |
| CD ileal | – | 23 | – | 21 |
| CD perianal | – | 7 | – | 0 |
| Extensive UC (%) | 35 | – | 35 | – |
| On immunosuppression (%) | 12 | 26 | 14 | 22 |
| Operated (%) | 16 | 43 | 11 | 49 |
| Mortality (IBD related) (%) | 3 (0) | 3 (1) | 10 (0.3) | 10 (1.3) |