Table 2. Demographic and clinical characteristics of the enrolled patients.
| CD patients (n = 428) | UC patients (n = 483) | |
|---|---|---|
| Mean age at the present (years) | 41.2±13.8 (SD:0.67) | 47.4±15.2 (SD:0.69) |
| Mean age at diagnosis (years) | 27.9±11.4 | 30.9±12.5 |
| Mean age at onset of symptoms (years) | 26.6±11.3 (SD: 0.56) | 30.3±12.4 (SD:0.58) |
| Male/female ratio | 194/234 | 228/255 |
| Smoking habits (n, %) | ||
| - Ex smoker | 109/385 (28.3) | 148/448 (33) |
| - Current smoker | 107/385 (27.8) | 37/448 (8.2) |
| - Never smoked | 169/385 (43.9) | 263/448 (58.7) |
| Appendectomy (n, %) | 76/378 (20.1) | 26/448 (5.8) |
| Use of oral contraceptives (n, %) | 119/372 (32) | 146/437 (33.4) |
| Location/extent (n, %) | ||
| - Ileal | 110 (25.7) | NA |
| - Colonic | 156 (34.6) | NA |
| - Ileocolonic | 151 (35.3) | NA |
| - Isolated upper GI | 11 (2.6) | NA |
| - Proctitis | NA | 165 (34.2) |
| - Left-sided colitis | NA | 167 (34.6) |
| - Extensive colitis | NA | 151 (31.3) |
| Behaviour (n, %) | ||
| -Non-stricturing, non-penetrating | 190 (44.4) | NA |
| -Stricturing | 101 (23.6) | NA |
| -Penetrating | 136 (31.8) | NA |
| -Perianal manifestation | 63 (14.7) | NA |
| Extraintestinal manifestations (n, %) | ||
| - Eye | 27 (6.3) | 18 (3.7) |
| - Skin | 55 (12.9) | 69 (14.3) |
| - Joint | 231 (54) | 279 (57.8) |