Table 2.

The demographics of participating subjects in this study given by their mean (standard deviation)

	Young controls	Age-matched controls	PD
Sample size	23	44	44
Age, in years	28.9 (5.2)	59.0 (10.2)	65.7 (7.9)
Years with PD	NA	NA	8.2 (5.2)
Deep brain stimulation implant (% yes)	NA	NA	20%
Sex (% male)	47.8%	45.5%	68%a
Self-reported balance issues (% yes)	0.09%	15.9%	77.3%
Self-reported faller (% yes)	0%	0%	34.1%

See Supplementary Table 1 for information on data collection sites and surfaces.

^aA significant difference in sex was observed between PD and age-matched control groups (p = 0.03), which is consistent with a higher prevalence of PD in males.