Table 1.
Patient characteristics.
| Phenotypea |
||||
|---|---|---|---|---|
| B1 | B2 | B3 | p value | |
| Age at diagnosisb | 26.7 ± 13.9 | 27 ± 12.5 | 25.4 ± 12.6 | NS |
| Age groupa | ||||
| <17 | 12 (25%) | 4 (21%) | 9 (23%) | NS |
| 17-40 | 24 (51%) | 11 (58%) | 18 (46%) | NS |
| >40 | 11 (24%) | 4 (21%) | 12 (31%) | NS |
| Mean post-biopsy follow-up (years) | 11 | 14 | 13 | NS |
| Smoking | 25 (52%) | 4 (22%) | 12 (39%) | NS |
| CD extenta | ||||
| Colon | 18 (37%) | 6 (32%) | 10 (33%) | NS |
| Ileo-colon | 30 (62%) | 13 (68%) | 20 (66%) | NS |
| Peri-anal disease | 8 (17%) | 6 (21%) | 15 (52%) | 0.007 |
| Surgery | 10 (21%) | 10 (29%) | 19 (68%) | <0.001 |
| Extra-intestinal manifestations | 23 (48%) | 3 (19%) | 9 (32%) | NS |
a
According to Montreal classification. bMean ± standard deviation. CD: Crohn’s disease.