Self-report information used to determine caseness groupings for irritable bowel syndrome
| Symptom | Rome I criteria | Rome II criteria |
|---|---|---|
| ✓ criterion included under the Rome I or Rome II diagnoses. | ||
| Two or more of the following abdominal pain-related symptoms: | ✓ | |
| Relief from pain after bowel movement | ||
| More frequent bowel movements with pain | ||
| Less frequent bowel movements with pain | ||
| Pain-related loose/watery stools | ||
| Pain-related hard/lumpy stools | ||
| One or more pain-related symptoms as above | ✓ | |
| Two or more of the following symptoms of disturbed defecation at least 25% of the time | ✓ | |
| Abnormal stool frequency | ||
| Abnormal stool form | ||
| Abnormal stool passage | ||
| Abdominal bloating | ||
| Mucus in stools | ||
| At least 3 months of disturbed bowel function | ✓ | |