Table 1.

Demographics and Drug Use

	GVG (N=8)	Placebo (N=9)
Gender (N)
Male	7	8
Female	1	1
Ethnicity (N)
Caucasian	4	4
Hispanic	0	2
African American	2	0
Other	2	3
Age (yrs)	42.3±2.6	37.7±2.7
Education (yrs)	11.9±0.4	13.2±0.6
Methamphetamine Use
Years of use	7.5±1.9	11.6±3.0
*Last 30 days use	15.1±3.5	13.7±2.3
Meth Route of Admin (N)
Smoke	6	4
IV	2	2
Other	0	3
Nicotine Use (N)	6/8	6/9
Years of use	19.2±3.3	8.8±2.1
Last 30 days use	25.2±4.8	21.3±4.7
Alcohol Use (N)	5/8	9/9
Years of use	10.6±4.8	13.6±4.0
Last 30 days use	4.6±2.8	5.9±3.1
Marijuana Use (N)	6/8	8/9
Years of use	9.8±3.9	12.9±1.9
Last 30 days use	5.5±2.5	3.5±1.8

^*Last 30 days use indicates number of days of use of that drug in the 30 days preceding entry into this study.