Table 1.

Demographic composition of our data set (N=726).

Characteristics		Participants with PDa	Participants without PD
Total, n (%)		262 (36.1)	464 (63.9)
Gender, n (%)
	Female	101 (38.5)	300 (64.6)
	Male	161 (61.4)	164 (22.5)
Age (years), mean (SD)		65.92 (9.2)	57.98 (14.2)
Country, n (%)
	United States	199 (75.9)	419 (90.3)
	Other	63 (24)	45 (9.7)
Years since diagnosed, mean (SD)		7.88 (5.41)	N/Ab

^aPD: Parkinson disease.

^bN/A: not applicable.