Table 17.
Prevalence of multiple extraintestinal diseases
| Total n | Ulcerative colitis n | Crohn’s disease n | |
| Two | 27 | 14 | 13 |
| Three | 14 | 5 | 9 |
| Four | 1 | 0 | 1 |
| Total | 42/873 (4.5%) | 19/619 (3.1%) | 23/254 (9.3%) |
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