Frequency of reported symptoms
| Symptom | Cancer (%) | Normal (%) |
| None | 926 (9.07) | 4377 (14.47) |
| Frequency | 2711 (26.55) | 5083 (16.80) |
| Diarrhoea | 2245 (21.99) | 7049 (23.30) |
| Rectal bleeding | 5636 (55.20) | 13 266 (43.86) |
| Rectal bleeding without anal irritation* | 3654 (35.78) | 7534 (24.91) |
| Urgency | 2551 (24.98) | 7667 (25.35) |
| Mucus | 1571 (1.54) | 3751 (12.40) |
| Weight loss | 1333 (13.05) | 3801 (12.57) |
| Frequency and diarrhoea and urgency* | 606 (5.93) | 1321 (4.37) |
↵* Significant symptoms.