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| Total IBD | Crohn’s Disease | Ulcerative colitis | ||
|---|---|---|---|---|
| Pain peroid | N(%) | N(%) | N(%) | p-value |
| <1 month | 15 (2) | 6 (1) | 9 (3) | p = 0.2956 |
| 1 month—½ year | 57 (6) | 34 (7) | 20 (5) | p = 0.4006 |
| ½ year-1 year | 59 (7) | 30 (6) | 27 (7) | p = 0.6807 |
| 1–2 years | 79 (9) | 30 (6) | 47 (12) | p = 0.0026 |
| 2–5 years | 215 (24) | 119 (25) | 93 (24) | p = 0.8739 |
| >5 years | 469 (52) | 265 (55) | 191 (49) | p = 0.1166 |
| No pain | 369 (29.2) |
