Table 2.

Gender and race distribution. Gender was mostly balanced, with a male to female ratio of 15 to 16 and a total distribution slightly skewed toward female participants without Parkinson disease. Race was largely skewed toward White and Asian participants, with White and American Indian/Alaska Native participants having similar proportions of participants with and without Parkinson disease; Asian participants were mostly without Parkinson disease.

Characteristics				Participants (N=31), n (%)
Participants with Parkinson disease
	Gender
		Male	8 (26)
		Female	5 (16)
	Race
		White	10 (32)
		Asian	3 (10)
		American Indian or Alaska Native	0 (0)
		Unspecified	0 (0)
Participants without Parkinson disease
	Gender
		Male	7 (23)
		Female	11 (36)
	Race
		White	8 (26)
		Asian	8 (26)
		American Indian or Alaska Native	1 (3)
		Unspecified	1 (3)