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Receiver operating characteristic (ROC) curve analyses of: (A) atypical parkinsonian syndromes (APS) vs controls; (B) APS vs Parkinson’s disease (PD). Combined plot=significant Olink proximity extension assay markers+neurofilament light chain (NF-L)+covariates. Covariates in APS vs controls analysis=age at testing and gender. Covariates in APS vs PD analysis=age at testing, disease duration at testing and gender.
