TABLE 2.

Correlation of erythrocytic biomarkers with clinical characteristics.

Erythrocytic biomarkers	Diagnosis		HAMA (N = 70)	HAMD (N = 70)	MDS-UPDRS III (N = 74)	H&Y (N = 90)	MMSE (N = 67)	MoCA (N = 67)
Total α-syn	PD	r	−0.292	−0.182	0.455	0.170	−0.134	−0.153
		p	0.016	0.140	<0.001	0.113	0.291	0.227
Oligomeric α-syn	PD	r	0.057	0.131	0.107	−0.106	−0.147	−0.152
		p	0.649	0.291	0.368	0.327	0.248	0.229

Partial correlation analysis with the controlling of age and sex was used to assess the r and p -values between erythrocytic biomarkers and clinical characteristics.

PD, Parkinson’s disease; α-syn, α-synuclein; HAMA, Hamilton Anxiety Rating Scale; HAMD, 17-item Hamilton Depression Rating Scale; MDS-UPDRS III, Movement Disorder Society sponsored Unified Parkinson’s Disease Rating Scale Part-III; H&Y, Hoehn & and Yahr scale; MMSE, Mini-mental State Examination; MoCA, Montreal Cognitive Assessment.

All significant p-values are highlighted by bold characters.