Table 3.

The demographic characteristics of the Parkinson’s disease patients and controls.

Variables	Parkinson’s disease	Control	P-value
GSE100054	(n = 10)	(n = 9)
Age (years)	67.00 ± 8.89	62.33 ± 7.50	0.211b
Sex ratio (male/female)	5/4	5/5	1.000a
Validation cohort	n = 103	n = 31
Age (years)	67.10 ± 11.20	65.51 ± 8.77	0.463b
Sex ratio (male/female)	54/49	16/15	1.000a
Duration (years)	6.93 ± 2.23	0
Hoehn and Yahr stage	2.61 ± 0.64 (range 1–4)	0

^aχ² test; ^bMann–Whitney U test.