Figure 4

Estimated 15-year mean trajectories of staging and motor fluctuation outcomes from Parkinson’s disease onset at respectively 45, 55, 65, and 75 years of age. Trajectories estimated based on data from 2307 visits (Hoehn & Yahr) and 2510 visits (motor fluctuation outcomes). Dotted line represents the estimated mean scores for patients with onset at the given age.