Table 1.

Study demographics and drug use history of subjects at baseline visit.

Sex (M/F)	9/3
Age (years)	53.1(5.3)
Race (Caucasian/African American/Other)	1/11/0
Education (years in school)	12.8 ± 1.8
Depression (BDI)	11.9 ± 10.5
Anxiety (STAI total)	76.9 ± 23.0
Age of onset cocaine use (years)	24.4 ± 27.3
Age of regular cocaine use (years)	27.1 ± 26.3
Years of regular cocaine use (years)	18.6 ± 9.3
Frequency of yearly cocaine use (days per year)	60 (19.5–162)*
Grams of cocaine use per day in past year	4.2 ± 4.7
Dollars spent per day in past year	138.8 ± 67.4
Duration of cocaine abstinence (days)	24.3 ± 24.9
Cocaine Withdrawal (CSSA)	17.0 ± 13.5
Cocaine Craving (CQ)	16.5 ± 9.0
Perceived Stress (PSS)	21.1 ± 5.8
Mean rating of drug minus neutral visual cues (cue craving)	2.67 ± 2.19

Data presented in mean ± standard deviation

^*median (interquartile range)

BDI: Beck Depression Inventory

CSSA: Cocaine Selective Severity Assessment

PSS: Perceived Stress Scale

STAI:State Trait Anxiety Inventory

CQ: Cocaine Craving Questionnaire