Fig. 2
From: SPARC: a new approach to quantifying gait smoothness in patients with Parkinson’s disease
Separation between Controls and PD. a Separation from the harmonic ratio in the medio-lateral direction in the OFF state (accuracy: 79%). From SPARC, b PD in the ON medication state (accuracy: 74%); c PD in the OFF medication state (accuracy: 89%). Gait smoothness in PD decreases sharply in the OFF state. There is a large overlap between the two groups. The horizontal line on each plot is the threshold separating the two groups with the highest accuracy. Note that the horizontal jitter on each plot is meaningless and was added for better visualization