Multidimensional Characterization of Parkinson's Disease Subtypes Through Motor Neuron Excitability and Peripheral Immune Dynamics: Insights from F-Wave Modulation Metrics.

The prespecified primary analysis, including LLM model, REML estimation (dependent variable = ulnar Fmin; fixed effects = group, side, age, sex, height, disease duration and LEDD; random intercept = subject) produced a directionally consistent pattern (AR > TD > HC), but the AR versus TD contrast was attenuated and did not reach statistical significance after covariate adjustment. 3.2.

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