Transthyretin values of the investigated cohorts.

Transthyretin (TTR) levels were calculated using a regression model with age as a covariate. As serum TTR levels were significantly different between females and males (see text) these values were calculated separately. P-values <0.05 between patients with Lewy body disorders (LBD) and controls were considered significant. Post-hoc analyses were performed for comparison of TTR levels between the following cohorts: Parkinson’s disease non-demented (PDND), Parkinson’s disease with dementia (PDD), dementia with Lewy bodies (DLB), controls, PDD versus DLB, PDD versus controls, and DLB versus controls, with p-values <0.01 (0.05/5 groups) considered significant. CSF, cerebrospinal fluid.