967839.fig.001a
(a)
967839.fig.001b
(b)
Figure 1: (a) Scatterplot of total Motor UPDRS scores OFF PD medication versus difference in total Motor UPDRS scores OFF medication and ON medication (test of slope ). (b) Scatterplot of total Motor UPDRS scores ON PD medication versus difference in total Motor UPDRS scores OFF medication and ON medication (test of slope ).