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. Author manuscript; available in PMC: 2010 Jan 15.
Published in final edited form as: Biol Psychiatry. 2008 Sep 23;65(2):122–128. doi: 10.1016/j.biopsych.2008.08.004

Table 1.

Demographic and drug use characteristics of methamphetamine (MA) abusers and control subjects.

Methamphetamine Abusers
(n = 37)
Control Subjects
(n = 17 )
Demographic Variables
Age, y, mean (SD) 36.29 (8.7) 32.18 (7.5)
Range 19 to 51 years 19 to 46 years
Females 24 (65%) 8 (47%)
Subject’s education, y, mean (SD) 13.19 (1.4) ††† 14.48 (1.7)
Parental education, y, mean (SD) 13.54 (3.2) 14.12 (2.7)
NART 107.76 (5.2) †† 111.19 (5.6)
Race
White (non-Hispanic) 30 (81%) 8 (47%)
White (Hispanic) 5 (14%) 5 (29%)
African American 1 (3%) 1 (3%)
Other 1 (3%) 3 (18%)
Right-handed 34 (92%) 13 (76%)
Methamphetamine Use Variables
Duration, y, mean (SD) 11.61 (7.1) --
Range 1.5 to 31 years
Months Abstinent, mean (SD) 20.98 (31.9) --
Range 3 weeks to 10 years
Age of first use, y, mean (SD) 19.92 (6.9) --
Range 16 to 41 years of age
Tobacco smokers 30 (81%) 4 (24%)
History of Cannabis Abuse 20 (54%) --
††

Significantly different from control group, p < .05

†††

Significantly different from control group, p < .01