Table 1.

Demographics and drug use.

	Nepicastat (n = 15)	Placebo (n = 5)
Gender (n)
Male	13	4
Female	2	1
Race/ethnicity (n)
Caucasian	7	2
Hispanic	1	0
African American	7	3
Age (years)	40.46 ± 1.3	37.8 ± 2.2
Education (years)	11.90 ± 0.2	12.2 ± 0.2
Cocaine use
Years of use	16.9 ± 1.9	16.8 ± 2.9
Last 30 days usea	22.5 ± 1.2	26.4 ± 2.8
Cocaine primary route of admin (n)
Smoke	13	5
IV	2	0
Alcohol use (n)	15/15	5/5
Years of use	15.1 ± 2.1	15.6 ± 5.7
Last 30 days use	10.1 ± 2.4	17.8 ± 7.3
Marijuana use (n)	13/15	4/5
Years of use	12.4 ± 2.7	13.2 ± 4.6
Last 30 days use	7.2 ± 2.7	9.4 ± 6.6

Data reflect number of subjects (n) or mean ± S.E.M.

^aLast 30 days use reflected the 30 days preceding screening for the current study.