Skip to main content
. Author manuscript; available in PMC: 2009 Sep 18.
Published in final edited form as: Neuropsychopharmacology. 2007 Jun 13;33(4):796–805. doi: 10.1038/sj.npp.1301470

Table 1.

Showing Demographics and Drug Use Variables for Cocaine Abusing and Socially Drinking Control Males and Females

Subject variable Cocaine females (n = 17) Cocaine males (n = 23) Healthy females (n = 19) Healthy males (n = 21) p-values for χ2
Race <0.2
 Caucasian 8 7 8 13
 African American 6 12 8 2
 Hispanic 1 2 2 5
 Other 2 2 1 1
Age 38.59 (6.52) 36.26 (7.96) 35.00 (9.11) 34.62 (10.77) <0.6
Years of education 13.53 (1.33) 13.78 (2.11) 13.89 (3.21) 14.29 (1.55) <0.4
Cocaine use (no. of days used in past 30) 17.35 (10.05) 16.96 (8.35) 0 (0) 0 (0) <0.0001
Alcohol use (no. of days used in past 30) 7.71 (8.45) 11.00 (10.55) 2.16 (2.71) 7.24 (8.00) <0.02
Years of cocaine use 9.12 (6.43) 8.56 (7.00) 1.00 1.00 (1.41) <0.1
Years of alcohol use 9.71 (8.26) 13.29 (10.19) 5.59 (6.00) 11.42 (10.44) <0.07
Lifetime depressive disorder 5 9 3 0 <0.01
Lifetime PTSD 7 6 3 0 <0.01