Prevalence of significant bowel disease (n; %) present at colonoscopy (colorectal cancer (CRC), higher risk adenoma (HRA), inflammatory bowel disease (IBD)), by category of faecal haemoglobin concentration (f-Hb) measured in primary care (n=1447)
| Colonoscopy completed (n=1447) | <10 µg/g (n=667) | ≥10 µg/g (n=780) | P value† | |
| Colorectal cancer | 95 (6.6) | 9 (1.3) | 86 (11.0) | <0.001 |
| Higher risk adenoma | 133 (9.2) | 31 (4.6) | 102 (13.1) | <0.001 |
| Inflammatory bowel disease | 68 (4.7) | 4 (0.6) | 64 (8.2) | 0.003 |
| CRC+HRA+IBD | 296 (20.5) | 44 (6.6) | 252 (32.3) | <0.001 |
| Other* | 615 (42.5) | 304 (45.6) | 311 (39.9) | 0.038 |
| No pathology | 536 (37.0) | 319 (47.8) | 217 (27.8) | <0.001 |
*Low-risk adenoma, hyperplastic polyps, diverticular disease, angiodysplasia, haemorrhoids, microscopic colitis, radiation proctitis, and solitary rectal ulcer.
†χ2 test.