Table 3.

Clinical characteristics of SPECT participants

	RBD patients	Healthy controls	Parkinson’s disease patients
Number of subjects	8	10	10
Sex ratio (male:female)	6M:2F	5M:5F	6M:4F
Age at the time of the scan (years)	68.5 ± 6.80	60.5 ± 8.90	68.6 ± 6.10
MMSE score	28.4 ± 1.30	29.7 ± 0.67	28.5 ± 1.08
Hoehn and Yahr stage	n/a	n/a	1 ± 0
Disease duration from onset (years)	6.3 ± 3.20	n/a	1.5 ± 0.62
Disease duration from diagnosis (years)	5.3 ± 3.01	n/a	0.4 ± 0.59

Data represent mean ± 1 SD.

MMSE = Mini-Mental State Examination; n/a = not applicable