Abstract
Objective
Recent studies have shown an association between migraine and restless legs syndrome (RLS), but RLS prevalence among individuals with migraine differs substantially across studies. The present work aimed to comprehensively assess available evidence to estimate RLS prevalence among individuals with migraine and non-migraine controls.
Method
Web of Science, PubMed, Embase, Chinese National Knowledge Infrastructure, Wanfang, and SinoMed databases were searched for observational and case-control studies of RLS prevalence among individuals with migraine. Eligible studies were meta-analyzed using Stata 12.0 software.
Results
Pooled RLS prevalence in migraine was 19%, and the prevalence was lower in Asia (16%) than outside Asia (21%). Pooled RLS prevalence was 18.8% among individuals with migraine with aura, and 18.5% among individuals with migraine without aura; the RLS prevalence in migraine with aura (MA) was higher than that of migraine without aura (MO) (OR 1.17, 95%CI 1.01–1.34; p = 0.037). Pooled RLS prevalence in a case-control study was significantly higher among individuals with migraine (17.9%) than among non-migraine controls (7.1%) (OR 2.65, 95%CI 2.26–3.10; p < 0.001).
Conclusion
Our meta-analysis provides the first reliable pooled estimate of RLS prevalence among individuals with migraine, and it provides strong evidence that RLS risk is higher among individuals with migraine than among controls.
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Funding
This research was supported by the Yunnan Province Medical Health Research Institute Project (2018NS0102), the First Affiliated Hospital of Kunming Medical University Doctoral Research Fund Project (2017BS005), and the National Natural Science Foundation of China (81371281).
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Hui Ren and Zhong Xu are co-corresponding author to this article.
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Supplemental Fig. 1
Sensitivity analysis of all included studies. (PNG 305 kb)
Supplemental Fig. 2
Funnel plot to assess bias in RLS prevalence among migraine patients. (PNG 12 kb)
Supplemental Fig. 3
Forest plot of RLS prevalence among MA individuals. (PNG 24 kb)
Supplemental Fig. 4
Forest plot of RLS prevalence among MO individuals. (PNG 22 kb)
Supplemental Fig. 5
Funnel plot to assess bias in the comparison of RLS prevalence between MA and MO. (PNG 36 kb)
Supplemental Fig. 6
Funnel plot to assess bias in the comparison of RLS prevalence between migraine patients and healthy controls. (PNG 35 kb)
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Yang, X., Liu, B., Yang, B. et al. Prevalence of restless legs syndrome in individuals with migraine: a systematic review and meta-analysis of observational studies. Neurol Sci 39, 1927–1934 (2018). https://doi.org/10.1007/s10072-018-3527-7
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DOI: https://doi.org/10.1007/s10072-018-3527-7