Table 1.

Demographic characteristics and cocaine-dependent subjects’ drug use information.

	Controls	Cocaine- dependent
Gender:*
Males	68.0%	90.8%
Females	32.0%	9.2%
Race:
Black	52.0%	72.3%
White	40.0%	23.1%
Hispanic	4.0%	4.6%
Other	4.0%	–
Mean age	41.5 ± 8.4	43.8 ± 7.3
Education (years)**	14.0 ± 1.6	12.5 ± 1.8
Estimated IQ**	97.2 ± 10.5	89.0 ± 8.6
# Subjects with Alcohol use disorder	0	42
INDUC 2 Lifetime:
Physical**	1.4 ± 1.7	6.2 ± 1.7
Interpersonal**	0.96 ± 1.7	9.1 ± 1.9
Intrapersonal**	1.0 ± 2.2	7.5 ± 1.3
Impulse control**	1.9 ± 2.5	8.6 ± 2.4
Social responsibilities**	0.56 ± 1.2	6.3 ± 1.3
TLFB:
Lifetime # of days used		3208 ± 2191
Lifetime $ spent on cocaine		345,695 ± 393 688
# Days used in last 90 days		66.0 ± 26.4
$ spent in last 90 days on cocaine		6247 ± 5453

^*p <0.05;

^**p <0.0001 between cocaine-dependent patients and controls on measured variables. INDUC, Inventory of Drug Use Consequences; TLFB, TimeLine Follow Back.