Association of serum NAb titres with diagnosis (PDND patients versus PDD patients).

Logarithmized serum NAb titres were calculated using a multiple linear regression model with age, gender, age at onset parkinsonism and disease duration parkinsonism as covariates. Data are presented with median (range). P-values 1–42, Amyloid-beta1–42; Asyn, Alpha-synuclein; MBP, Myelin basic protein; MOG, Myelin oligodendrocyte glycoprotein; NAb, naturally occurring autoantibody; OD, Optical density; PDD, Parkinson’s disease with dementia; PDND, Parkinson’s disease non-demented; S100B, S100 calcium binding protein B.