Table 1. Demographic characteristics of the IBD study population.
| Crohn’s disease | Ulcerative colitis | Controls | |
|---|---|---|---|
| n = 1073 | n = 464 | n = 719 | |
| Gender | |||
| Male (%) | 512 (47.7) | 247 (53.2) | 475 (66.1) |
| Female (%) | 561 (52.3) | 217 (46.8) | 244 (33.9) |
| Age (yrs) | |||
| Mean ± SD | 40.4 ± 14.2 | 43.2 ± 15.4 | 47.4 ± 9.2 |
| Range | (5–86) | (8–91) | (31–68) |
| Body mass index | |||
| Mean ± SD | 23.1 ± 4.2 | 23.9 ± 4.5 | |
| Range | (13.2–40.8) | (15.2–53.6) | |
| Age at diagnosis (yrs) | |||
| Mean ± SD | 26.8 ± 12.0 | 30.7 ± 13.6 | |
| Range | (2–78) | (4–81) | |
| Disease duration (yrs) | |||
| Mean ± SD | 14.6 ± 9.4 | 13.0 ± 8.7 | |
| Range | (0–50) | (0–50) | |
| Positive family history of IBD (%) | |||
| 117 (10.9) | 40 (8.6) | ||