fig2

Figure 2. Age of Motor Milestone Attainment in PTHS. In this line graph, we demonstrate the mean age at which individuals with PTHS attain motor milestones of rolling, sitting, standing, cruising, and walking as grouped by those with abnormal EEG and those with normal EEG. The mean age of attainment in typically developing individuals is depicted for reference. PTHS: Pitt-Hopkins syndrome; EEG: electroencephalogram.