Table 1.

Basic statistics

		Healthy volunteers	Patients (follow-up diagnoses)		Total
			IPS or DLB	Non-IPS
Sex	Women, N	16	9	2	26
	Men, N	14	17	1	32
Age at inclusion, years	Median	70.0	68.8	71.6	69.3
	Mean	70.3	68.3	68.4	69.3
	SD	4.7	7.6	12.3	6.5
Symptoms’ duration, years	Median	–	0.7	1.0	0.7
	Mean	–	1.2	1.3	1.2
	SD	–	1.2	0.6	1.1
Baseline UPDRS III	Median	0.5	23	17	7
	Mean	1	23	16	11
	SD	2	7	6	12
Baseline MMSE	Median	30	29	30	29
	Mean	29	29	30	29
	SD	1	1	1	1

IPS Idiopathic parkinsonian syndromes, i.e., degenerative parkinsonian syndrome, such as Parkinson’s disease or atypical parkinsonian syndrome. DLB Dementia with Lewy bodies

Non-IPS Patients with non-degenerative parkinsonism, e.g., vascular parkinsonism or other condition with tremor or Parkinson-like symptoms