Overview of the demographic information for prevalent IBD cases in the Lothian IBD registry on 31/08/2018
| Variable | CD (n=2552) | UC (n=3877) | IBDU (n=606) |
| Female (n (%)) | 1403 (55.0) | 1868 (48.2) | 305 (49.0) |
| Age (Median, IQR) | 49.1 (34.8–62.4) | 52.6 (39.4–65.9) | 51.0 (37.6–63.0) |
| Age at diagnosis (Median, IQR) | 29.4 (21.0–45.6) | 36.8 (26.1–50.1) | 42.0 (27.6–54.5) |
| Disease duration (Median, IQR) | 11.7 (5.7–20.7) | 10.7 (5.4–18.7) | 6.9 (3.5–12.2) |
CD, Crohn’s disease; IBDU, IBD unclassified.