for the main comparison.
| Dietary modifications compared with no modification/placebo for Ménière's disease or syndrome | ||||||
|
Patient or population: adults with Ménière's disease or syndrome Settings: hospital and community Intervention: dietary modification Comparison: no modification/placebo | ||||||
| Outcomes | Illustrative comparative risks* (95% CI) | Relative effect (95% CI) | No of participants (studies) | Quality of the evidence (GRADE) | Comments | |
| Assumed risk | Corresponding risk | |||||
| No modification/placebo | Dietary modification | |||||
| Proportion of patients with control of vertigo or decrease in vertigo attacks | No data | No data | No data | No data | — | — |
| Proportion of patients with adverse effects (e.g. hyponatraemia, mood disturbance and headaches) | No data | No data | No data | No data | — | — |
| Proportion of patients with loss or gain of hearing/reduction in progression of hearing loss | No data | No data | No data | No data | — | — |
| Proportion of patients with a reduction in the severity of tinnitus | No data | No data | No data | No data | — | — |
| Proportion of patients with a reduction in the perception of aural fullness | No data | No data | No data | No data | — | — |
| Overall changes in well‐being and quality of life | No data | No data | No data | No data | — | — |
| Any other adverse effects | No data | No data | No data | No data | — | — |
| *The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: confidence interval | ||||||
| GRADE Working Group grades of evidence High quality: Further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: We are very uncertain about the estimate. | ||||||