Tracking prodromal Parkinson's disease: a five-year follow-up of the PARCAS cohort.

In contrast, analyses across the imputed datasets revealed a slight predominance of increasing over decreasing ranks, suggesting a mild upward trend in pPD probability; nevertheless, these changes also failed to reach statistical significance (average Z = −1.179, average p = 0.243, small estimated effect size: average r = 0.096).

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