Table 1.

Demographic Characteristics of HIV/Coc− and HIV/Coc+ Groups

	Group
Demographic Variable	HIV/Coc− (N=57) M (SD)	HIV/Coc+ (N=56) M (SD)	Test Statistic	Effect size
Age	41.98 (7.75)	43.54 (5.91)	t (111)=−1.20	d=.23
Education (years)	12.93 (1.87)	13.43 (2.09)	t (111)=−1.34	d=.25
Estimated Verbal IQ	105.02 (8.50)	104.64 (8.14)	t (110)=.24	d=.04
% Male	75%	79%	X2 (1,N=113)=.157	Øc=−.04
% Caucasian	19%	4%	X2 (1,N=113)=6.862*	Øc =.25
CD4 Count	471.61 (294.08)	434.49 (227.30)	t (107)=.73	d=.14
% AIDS	70%	63%	X2 (1,N=112)=.541	Øc=−.07
Major Depression	42%	29%	X2 (1,N=113)=2.263	Øc=−.14
Cocaine
Abuse or Dependence	35%	22%	X2 (1,N=112)=2.415	Øc=.15
Duration of Abuse and/or Dependence	248.23 (145.31)	161.85 (150.64)	t (66)=2.41*	d=.58
Alcohol
Abuse or Dependence	46%	41%	X2 (1,N=113)=.237	Øc=.05
Duration of Abuse and/or Dependence	225.73 (186.85)	133.10 (209.15)	t (40)=2.01	d=.47
Stimulants
Abuse or Dependence	74%	87%	X2 (1,N=112)=3.274	Øc=−.17
Positive Toxicologya	0%	0.01%	X2 (1,N=111)=1.065	Øc=.10
Duration of Abuse and/or Dependence	199.54 (142.01)	59.20 (41.03)	t (16)=2.14*	d=1.34
Opiates
Abuse or Dependence	88%	78%	X2 (1,N=112)=1.808	Øc=.13
Positive Toxicology	0%	4%	X2 (1,N=111)=2.150	Øc=.14
Duration of Abuse and/or Dependence	379.20 (420.31)	197.50 (267.38)	t (11)=.96	d=.52
Cannabis
Abuse or Dependence	58%	51%	X2 (1,N=112)=.551	Øc=.07
Positive Toxicology	0%	33%	X2 (1,N=111)=22.677**	Øc=.45
Duration of Abuse and/or Dependence	206.57 (176.77)	254.00 (214.76)	t (18)=−.50	d=.24

Abbreviation key. M (SD)=Mean and standard deviation. HIV/Coc−=HIV infected participants who report no cocaine use for four weeks prior to testing and verified by urine analysis. HIV/Coc+=HIV infected participants reporting cocaine use within four weeks of testing and/or were urine positive for cocaine metabolites; IQ=Intelligence Quotient; CD4= Cluster of Differentiation 4; AIDS=Acquired Immunodeficiency Syndrome

^*p < .05

^**p < .001

^aAmphetamines