Table 2.
Demographic and clinical characteristics in patients with Crohn’s disease and ulcerative colitis n (%)
| CD | UC | P value | |
| n | 1740 | 1054 | |
| Sex (female) | 1103 (63) | 561 (53) | < 0.01 |
| Median age, yr, (IQR 25-75) | 39.9 (30-51) | 43.4 (33-53) | < 0.01 |
| Median age diagnosis, yr, (IQR 25-75) | 24.1 (19-32) | 29.0 (22-39) | < 0.01 |
| Median age disease duration, yr, (IQR 25-75) | 11.7 (6-21) | 10.3 (5-18) | < 0.01 |
| Family history of IBD1 | 518 (30) | 266 (25) | 0.01 |
| Appendectomy1 | 266 (15) | 70 (7) | < 0.01 |
| Smoking | 1620 (100) | 984 (100) | |
| Yes | 439 (27) | 117 (12) | < 0.01 |
| Disease location | |||
| L1: ileal disease2 | 324 (22) | ||
| L2: colon disease2 | 450 (31) | ||
| L3: ileocolon disease2 | 696 (47) | ||
| L4: upper GI disease1 | 156 (9) | ||
| P: peri-anal disease1 | 485 (28) | ||
| E1: proctitis3 | 77 (8) | ||
| E2: left-sided colitis3 | 315 (34) | ||
| E3: extensive colitis3 | 541 (58) | ||
| Disease behavior CD | |||
| Fistulising disease1 | 289 (17) | ||
| Penetrating disease1 | 232 (13) | ||
| Stricturing disease1 | 445 (26) | ||
| Education | 1708 (100) | 1036 (100) | |
| Low | 932 (55) | 517 (50) | 0.02 |
| Employment status | |||
| Full-time | 607 (35) | 440 (42) | < 0.01 |
| Part-time | 359 (21) | 224 (21) | |
| Partially disabled to work | 129 (7) | 54 (5) | |
| Fully disabled to work | 342 (20) | 124 (12) | |
| Sick leave | 77 (4) | 36 (3) | |
| Retired | 22 (1.3) | 21 (2) | |
| Other | 204 (12) | 155 (15) |
1
Missing values were scored as non-present;
2
These percentages are calculated for 1470 patients with CD;
3
These percentages are calculated for 993 patients with UC. CD: Crohn’s disease; UC: Ulcerative colitis.