Comparison of digitomotography parameters between baseline and 12 months follow-up assessments.

Data are presented with mean (standard deviation). Early and mid-stage PD cohorts were merged to increase statistical power. Statistical comparisons were performed with Student’s t test. CoV, coefficient of variation; DEV mean, mean tap deviation from the predefined 1.55 Hertz cueing tone; DEV SD, variability of tap deviation from the predefined 1.55 Hertz cueing tone; IPI, interpeak interval; SD, standard deviation; TF, tap force.Comparison of digitomotography parameters between baseline and 12 months follow-up assessments.