Diagnostic Test to Identify Parkinson’s Disease from the Blood Sera of Chinese Population: A Cross-Sectional Study

Table 1

Demographic characteristics of Parkinson’s disease (PD), neurodegenerative disorder (ND), and control subjects.

Characteristics	PD (n = 209)	Healthy control (n = 50)	ND (n = 60)
Age (years)	68.2 ± 5.42	65.6 ± 4.3	69.4 ± 7.1
Male	115 (54.02%)	29 (58.0%)	35 (58.33%)
Female	94 (44.98%)	21 (42.0%)	25 (41.67%)
Cigarette smoker	63 (30.14%)	15 (30.0%)	19 (31.67%)
Nonsmoker	146 (69.86%)	35 (70.0%)	41 (68.33%)
Alcohol drinker	81 (38.76%)	23 (46.0%)	26 (43.33%)
Nondrinker	128 (61.24%)	27 (54.0%)	34 (56.67%)
α-Synuclein in CSF (pg/μl)	1.36 ± 0.34	0.69 ± 0.48	1.76 ± 0.31
α-Synuclein in serum (pg/μl)	0.06 ± 0.51	0.01 ± 0.02	0.08 ± 0.12
Tau protein in CSF (pg/ml)	219 ± 43	116 ± 32	421 ± 93

CFS = cerebrospinal fluid.