Fig. 3From: Genetic heterogeneity on sleep disorders in Parkinson’s disease: a systematic review and meta-analysisForest plots of meta-analysis results on the risk (a) and severity (b) of RBD in PD patient subgroups carrying GBA variants compared with iPD. PD Parkinson’s disease, iPD idiopathic Parkinson’s disease, GBA glucocerebrosidase gene, OR odds ratio, SMD standard mean differenceBack to article page