Table 1.
Summary of Crohn's disease and controls and Montreal classification data.
| Crohn's disease n (%) | Control group n (%) | |
|---|---|---|
| Gender | ||
| Female | 223 (68.4) | 199 (37.3) |
| Male | 103 (31.6) | 335 (62.7) |
|
| ||
| Age at first diagnosis | ||
| Below 17 | 30 (10.5) | Not applicable |
| Between 17 and 40 | 204 (71.6) | |
| Above 40 | 51 (17.9) | |
|
| ||
| Crohn's disease location | ||
| Colonic | 86 (32.2) | Not applicable |
| Ileal | 97 (36.3) | |
| Ileocolonic | 84 (31.5) | |
|
| ||
| Crohn's disease behaviour | ||
| Inflammatory | 152 (57.4) | Not applicable |
| Penetrating | 32 (12.1) | |
| Stricturing | 81 (30.6) | |
| Ileal/stricturing | 47 (40.2) | |
| Colonic/inflammatory | 70 (59.8) | |
|
| ||
| Any other families and relatives with IBD | ||
| Yes | 88 (28.3) | Not applicable |
| No | 223 (71.7) | |
|
| ||
| Bowel resection | ||
| Yes | 99 (31.8) | Not applicable |
| No | 212 (68.2) | |
|
| ||
| Smoker at diagnosis/smoker at interview | ||
| Yes | 112 (46.7) | 118 (29.4) |
| No | 128 (53.3) | 283 (70.6) |
|
| ||
| Extraintestinal manifestations | ||
| Yes | 44 (14.2) | Not applicable |
| No | 267 (85.8) | |