Use of selected drugs in cases and controls by disease group. All counts are of numbers of unique prescriptions
| All IBD | UC | CD | Indeterminate | |||||
|---|---|---|---|---|---|---|---|---|
| % cases | % controls | % cases | % controls | % cases | % controls | % cases | % controls | |
| IBD, inflammatory bowel disease, UC, ulcerative colitis; CD, Crohn’s disease; HRT, hormone replacement therapy. | ||||||||
| Corticosteroid (total number) | ||||||||
| 0 | 51 | 93 | 53 | 93 | 46 | 94 | 60 | 93 |
| 1–5 | 27 | 5 | 28 | 5 | 28 | 5 | 21 | 6 |
| 6–15 | 13 | 1 | 13 | 1 | 15 | 1 | 11 | 1 |
| 16–25 | 4 | 0 | 3 | 0 | 5 | 0 | 4 | 0 |
| >25 | 5 | 0 | 3 | 0 | 6 | 0 | 4 | 0 |
| Corticosteroid (density per year) | ||||||||
| 0 | 51 | 93 | 53 | 93 | 46 | 94 | 60 | 93 |
| <1 | 17 | 5 | 18 | 5 | 17 | 5 | 13 | 5 |
| ⩾1 | 32 | 2 | 29 | 2 | 38 | 2 | 27 | 2 |
| Opioid analgesics | ||||||||
| 0 | 75 | 94 | 78 | 94 | 70 | 94 | 75 | 93 |
| <1 | 13 | 4 | 12 | 4 | 13 | 4 | 14 | 5 |
| ⩾1 | 12 | 2 | 10 | 2 | 17 | 2 | 12 | 2 |
| Calcium and vit D | ||||||||
| 0 | 96 | 99 | 97 | 99 | 94 | 99 | 96 | 99 |
| <1 | 2 | 0 | 2 | 0 | 3 | 0 | 1 | 1 |
| ⩾1 | 2 | 1 | 1 | 1 | 3 | 1 | 2 | 1 |
| HRT | ||||||||
| 0 | 92 | 94 | 93 | 94 | 92 | 94 | 91 | 94 |
| <1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 |
| ⩾1 | 6 | 4 | 5 | 5 | 6 | 4 | 6 | 4 |
| Bisphosphonates | ||||||||
| 0 | 98 | 99 | 98 | 99 | 98 | 99 | 98 | 99 |
| <1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 |
| ⩾1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 |