VAS-IBS | Score Range* | Mean (SD) | Floor effects % | Ceiling effects % | Skewness |
---|---|---|---|---|---|
Physical symptoms | Â | Â | Â | Â | Â |
   Abdominal Pain | 0–100 | 46.5 (29.4) | 4.2 | 7.0 | 0.444 |
   Diarrhoea | 0–100 | 60.0 (34.3) | 7.1 | 20.0 | -0.283 |
   Constipation | 0–100 | 58.8 (32.9) | 2.8 | 12.7 | -0.226 |
   Bloating and Flatulence | 0–100 | 33.3 (27.1) | 8.5 | 1.4 | 0.774 |
   Vomiting and Nausea | 0–100 | 66.1 (33.8) | 4.2 | 25.4 | -0.543 |
Mental health | Â | Â | Â | Â | Â |
   Perception of mental well-being | 0–100 | 53.2 (30.0) | 5.5 | 5.6 | -0.044 |
Quality of Life | Â | Â | Â | Â | Â |
   Influence daily life ** | 0–80 | 43.6 (29.2) | 18.8 | 0 | -0.297 |