| Characteristics of rectal bleeding | Effective | Percentage | |
| Recectorgia | Yes | 17 | 23.30 |
| No | 56 | 76.70 | |
| Time of occurrence of rectal bleeding | During bowel movements | 12 | 70.50 |
| After bowel movements | 2 | 11.80 | |
| Outside of the stool | 1 | 5.90 | |
| During and after bowel movements | 2 | 11.80 | |
| Quantity of rectal bleeding | Traces | 11 | 64.70 |
| Drops | 5 | 29.40 | |
| Jet | 1 | 5.90 | |
| Appearance of rectal bleeding | Red | 13 | 76.50 |
| Black | 3 | 17.60 | |
| Clot | 1 | 5.90 | |
| Total | 73 | 100 | |