Fig. 2
From: Longitudinal decline in DAT binding in Parkinson’s disease: connections with sleep disturbances

Statistical analysis results of the striatal dopamine transporter (DAT) specific binding ratio (SBR). Linear mixed effects model investigating the relationship between striatal DAT SBR and sleep disturbances score. A for Epworth Sleepiness Scale (ESS) score; B for Rapid Eye movement Sleep Behavior Disorders Screening Questionnaire (RBDSQ) score. Multivariate logistic regression analysis investigating the relationship between striatal DAT SBR and sleep disturbances. C for excessive daytime sleepiness (EDS); D for probable rapid eye movement sleep behavior disorder (pRBD). Points represent estimated regression coefficients and bars represent 95% CIs; *p < 0.05; **p < 0.01; ***p < 0.001