Supplements 1:
Correlation matrix of the partitioned PD progression variable
level s
A B C D E F G H I J
A 1
B 0.5 1
C 0.15 0.57 1
D -0.23 -0.22 0.23 1
E -0.34 -0.44 -0.27 0.54 1
F -0.4 -0.5 -0.41 0.13 0.57 1
G -0.43 -0.48 -0.45 -0.16 0.12 0.54 1
H -0.38 -0.42 -0.43 -0.35 -0.16 0.04 0.49 1
I -0.33 -0.39 -0.42 -0.4 -0.29 -0.16 0.11 0.57 1
J -0.23 -0.33 -0.39 -0.35 -0.28 -0.15 0.03 0.29 0.74 1