| Age at enrollment, years, median (IQR) |
42 (32–50) |
48 (38–62) |
| Age at onset, years, median (IQR) |
24 (19–33) |
36 (24–50) |
| Sex, n, female/male |
84/219 |
371/402 |
| Family history, n, yes/no |
14/283 |
51/710 |
| Smoking, n, non/past or present |
195/104 |
543/214 |
| Montreal A, n, A1/A2/A3 |
26/231/35 |
34/424/295 |
| Montreal L, n, L1/L2/L3 |
96/45/157 |
― |
| Montreal B, n, B1/B2/B3 |
92/110/63 |
― |
| Proctitis/Left-sided colitis/Pancolitis, n |
― |
187/226/343 |
| Perianal lesion, n, yes/no |
114/183 |
7 /759 |
| Extraintestinal manifestation, n, yes/no |
27/272 |
39/698 |
| Colitic cancer, n, yes/no |
5/297 |
7/765 |
| Surgery for IBD, n, yes/no |
153/137 |
22/674 |
| Disease activity, median (IQR) |
80.6 (34.7–139) (CDAI) |
1 (0–2) (partial Mayo score) |
| CES-D score, median (IQR) |
6 (3–8) |
5 (3–7) |
| Sleeping pill use, n, yes/no |
25/272 |
37/725 |
| Psychotropic drug use, n, yes/no |
8/279 |
14/748 |
