Table 1.

Demographic characteristics with details about past history of substance abuse in patients. All values are mean ± SD.

	Controls	Ephedrone	Opiate dependent patients	t value, χ2 and F-value	p-value
Participants(no.)	18	15	13
Age (yrs)	32.3±5.5	34.0±7.2	32.0±7.1	0.34	0.71
Gender (male)	18	13	12	2.4	0.3
Education	13.8±2.8	12.2±1.4	12.0±1.9	5.1	0.01*
Drug abuse (yrs)			12.0±5.1
Replacement therapy (yrs)			1.4±1.3
Ephedrone abuse (yrs)		1.5±1.2
Ephedrone stopped (yrs)		6.2±2.6
Parkinsonism (yrs)		7.0±2.4
Substance abuse (patients)		15	13
i.v. opioid a		4	12
i.v.heroin		2	4
Cannabis		3	3
Cocaine		1	1
Morphine		0	1
Ephedrone (i.v/oral)		14/1	0

Significant differences are labeled with “*”. Controls, ephedrone, opiate dependent patients.