Table 2.
Population characteristics
| Characteristic | Mean | Source |
|---|---|---|
| Age | 42 | [40] |
| Age at diagnosis | 30 | [3] |
| Gender, % male | 42 | [3] |
| Weight | 75.83 | [41] |
| CDAI score | 220 | Mild threshold |
| Ileal (L1), % | 39.25 a | [3] |
| Colonic (L2), % | 23.25 a | [3] |
| Ileocolonic (L3), % | 25.25 a | [3] |
| Upper GI (L4), % | 14 a | [3] |
| Superficial ulcers, % | 30 | Illinois Gastroenterology Group Project Sonar Database |
| Deep ulcers, % | 13 | [40] |
| Severe rectal disease, % | 9 | [40] |
| Stricture, % | 22.87 | Illinois Gastroenterology Group Project Sonar Database |
| Anatomic involvement, % | 34 | [3] |
| Previous GI haemorrhage, % | 5 | Assumption |
| Previous surgery | 47 | [3] |
a
Only highest disease location considered. Other and unknown distributed evenly between all four locations
CDAI, Crohn’s disease activity Index; GI, gastrointestinal