Irritable bowel syndrome (IBS)-specific symptom and quality of life scores by patient group.
| Symptom score | IBS Rome II (n = 295) | Some symptoms of IBS but not meeting Rome II (n = 597) | z-statistica | P-value |
|---|---|---|---|---|
| Pain dimension | ||||
| Median (IQR) | 33.3 (20.0–46.7) | 20.0 (6.7–33.3) | 9.7 | <0.0001 |
| Constipation | ||||
| Median (IQR) | 33.3 (13.3–53.3) | 20.0 (6.7–40.0) | 4.6 | <0.0001 |
| Diarrhoea | ||||
| Median (IQR) | 20.0 (10.0–32.0) | 12.0 (4.0–24.0) | 6.5 | <0.0001 |
| Total | ||||
| Median (IQR) | 30.0 (22.9–41.4) | 18.2 (10.9–27.3) | 9.6 | <0.0001 |
| Quality of Life | ||||
| Median (IQR) | 80.1 (62.5–91.2) | 91.9 (81.6–97.1) | 9.3 | <0.0001 |
↵az approximation from Wilcoxon rank sum test. IQR = interquartile range.