Investigative tests performed
| Test performed | N (500) | % |
|---|---|---|
| Rigid sigmoidoscopy | 45 | 9 |
| Flexible sigmoidoscopy | 202 | 40.4 |
| Colonoscopy | 170 | 34 |
| Barium enema | 63 | 12.6 |
| Small bowel follow through | 56 | 11.2 |
| CT scan | 72 | 14.4 |
| MRI scan | 11 | 2.2 |
| Gastroscopy | 176 | 35.2 |
| Ultrasound | 72 | 14.4 |
| Faecal elastase | 34 | 6.8 |
| Anorectal physiology | 8 | 1.6 |
| Lactose hydrogen breath test | 6 | 1.2 |
| Glucose hydrogen breath test | 3 | 0.6 |
| SeHCAT | 5 | 1 |
| Urinary 5-HIAA | 6 | 1.2 |
| White cell localisation | 4 | 0.8 |
| Defaecating proctography | 4 | 0.8 |
| Gut hormones | 3 | 0.6 |
| Meckels scan | 2 | 0.4 |
| Abdominal x-ray | 2 | 0.4 |
| Colonic transit study | 2 | 0.4 |
| RAST test | 1 | 0.2 |
| Intravenous urogram | 1 | 0.2 |
| ERCP | 1 | 0.2 |
| Laparoscopy | 1 | 0.2 |
| Oesophageal physiology | 1 | 0.2 |
| Octreotide scan | 1 | 0.2 |
| Schilling test | 1 | 0.2 |
| Capsule endoscopy | 1 | 0.2 |
| Short synacthen test | 1 | 0.2 |
5-HIAA, 5-hydroxy indoleacetic acid; ERCP, endoscopic retrograde cholangiopancreatography; RAST, radioallergosorbent test; SeHCAT, seleno-25-homo-tauro-cholate scan.