Table 1.

Statistics of the cohorts used in this study.

Cohort	F/M (total)	Age (range)	Mean UPDRS (range)
HC	64/113 (177)	67.8 ± 11.2 (39–90)	1.73 ± 3.35 (0–34)
Prodromal	9/32 (41)	74.9 ± 6.93 (56–91)	6.73 ± 8.60 (0–52)
Early PD	127/241 (368)	68.4 ± 9.73 (40–98)	25.4 ± 11.7 (0–90)
DBS PD	76/104 (180)	65.1 ± 9.48 (26–85)	43.4 ± 16.1 (14–92)