Table 1.

Profile of control subjects, abstinent methamphetamine users, methcathinone users, and Parkinson’s disease patients

	Control subjects	MA users	MC users	PD patients
n	10	6	4	3
Age (yr)	30.5  ± 10.0	37.5  ± 8.1	31.2  ± 5.6	53.3  ± 10.4*
(range)	(18–48)	(26–45)	(26–39)	(45–65)
Sex (M/F)	4/6	3/3	2/2	2/1

Values represent the mean ± SD, with ranges shown in parentheses. n = Number of subjects.

*Designates significant difference from all other groups (ANOVA andpost hoc Duncan’s multiple range test; p < 0.05). MA, Methamphetamine; MC, methcathinone; PD, Parkinson’s disease.