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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2017 Sep 12;180:223–226. doi: 10.1016/j.drugalcdep.2017.08.020

Table 1.

Subject Demographics and Drug Use Variables

Mean/Count SD
Age 45.7 5.8
Female 16 (42%)
Race
 Caucasian 7 (18%)
 African American 31 (82%)
Years of Education 12.1 1.5
Income $7155 $7479
ZKPQ 1.4 1.7
CPD 11.8 7.4
FTND 3.8 2.3
Alcoholic Drinks Per Week 14.6 17.0
MAST 8.4 8.8
DAST 10.2 5.6
Cocaine Use
 Days Used Per Month 15.7 9.2
 Money Spent Per Month $659.5 $701.0
 Lifetime Uses 3562.6 2715.6
 Years Used 20.3 8.3
 Cocaine Abuse 11 (28.9%)
 Cocaine Dependence 25 (65.8%)

Note. ZKPQ = Impulsivity Subscale of the Zuckerman-Kuhlman Personality Questionnaire; CPD = cigarettes per day; FTND = Fagerström Test for Nicotine Dependence; MAST = Michigan Alcohol Screening Test; DAST = Drug Abuse Screening Test.