Table 1.

Demographics of the study participants.

	N = 1053
Age, years (SD)	63.1 (9.2)
Years since diagnosis (SD)	5.2 (5.5)
Gender Male Female	463 (44%) 556 (53%)
Ethnicity Caucasian Black Hispanic Native American Asian/Pacific Islander Other	978 (92.9%) 7 (0.7%) 14 (1.3%) 2 (0.2%) 9 (0.9%) 12 (1.1%)
Income Less than $20,000 Between $20 and 40,000 Between $40 and 60,000 Between $60 and 80,000 Between $80 and 100,000 Between $100 and 150,000 More than $150,000	56 (5.3%) 148 (14.1%) 139 (13.2%) 145 (13.8%) 137 (13%) 193 (18.3%) 155 (14.7%)
Hoehn & Yahr stage (1) 1-sided symptoms, minimal disability (2) Both sides affected, balance is stable (3) Mild-to-moderate disability, balance affected (4) Severe disability, able to walk and stand without help (5) Confinement to bed or wheelchair unless aided Do not know	522 (49.6%) 171 (16.2%) 292 (27.7%) 34 (3.2%) 2 (0.2%) 9 (0.9%)