Patient characteristics, phenotype, parity and treatment history
| Number of patients | Percentage of patients | |
| Ethnicity | ||
| Caucasian | 197 | 93.40 |
| Mixed | 1 | 0.50 |
| Asian | 1 | 0.50 |
| Black | 6 | 2.80 |
| Other | 6 | 2.80 |
| Not stated | 33 | |
| Parity | ||
| P0 | 63 | 36.00 |
| P1 | 66 | 37.80 |
| P2 | 23 | 13.10 |
| P3 | 23 | 13.10 |
| Not stated | 69 | |
| Smoking status | ||
| Never smoker | 164 | 81.20 |
| Previous smoker | 32 | 15.80 |
| Current smoker | 6 | 3.00 |
| Not stated | 42 | |
| Diagnosis | ||
| CD | 110 | 45.10 |
| UC | 124 | 50.80 |
| IBD-U | 10 | 4.10 |
| Phenotype UC | ||
| UC E1 | 41 | 33.30 |
| UC E2 | 48 | 39.00 |
| UC E3 | 34 | 27.70 |
| Not stated | 1 | |
| Phenotype CD | ||
| A1 | 17 | 16.50 |
| A2 | 85 | 82.50 |
| A3 | 1 | 1.00 |
| Not stated | 7 | |
| L1 | 35 | 33.70 |
| L2 | 25 | 24.00 |
| L3 | 44 | 42.30 |
| L4 | 1 | 1.00 |
| Not stated | 6 | |
| B1 | 71 | 71.00 |
| B2 | 9 | 9.00 |
| B3 | 20 | 20.00 |
| Not stated | 10 | |
| Perianal disease | ||
| Current | 9 | 8.20 |
| Previous | 19 | 17.30 |
| Previous resection surgery (all IBD patients) | 54 | 22.10 |
Where numbers do not add up to 244 some data were not supplied.
CD, Crohn’s disease; IBD, inflammatory bowel disease; IBD-U, IBD-unclassified; UC, ulcerative colitis.