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Subgroup analysis of the prevalence of restless legs syndrome according to diagnostic assessment tools and sources of heterogeneity
| Diagnostic tool | No. of studies | Pooled prevalence (%) | 95% CI (%) | I² (%) | Q (within) | P (within) | Q (between) | P (between) |
|---|---|---|---|---|---|---|---|---|
| IRLSSG criteria | 56 | 41.8 | 33.6–50.2 | 98.62 | 3042.39 | < 0.001 | 7.89 | 0.005 |
| Other diagnostic tools† | 9 | 22.2 | 13.0–32.8 | 98.81 | 1532.91 | < 0.001 |
