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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: J Clin Exp Neuropsychol. 2011 Mar 7;33(5):505–522. doi: 10.1080/13803395.2010.535504

Table 1.

Demographic and clinical characteristics of the study samples

HIV−
Reference
Sample
(N=172)		 HIV+
Reference
Sample
(N=124)		 Total Reference
Sample
(HIV− & HIV+)
(N=296)		 HIV−
Validation
Sample
(N=111)		 P1 P2
Age 37.86 (11.30) 43.93 (8.89) 40.40 (10.8) 33.95 (8.12) <.0001 <.0001
Education 12.92 (2.35) 12.85 (2.27) 12.9 (2.32) 14.30 (2.57) .80 <.0001
Gender (% male) 64.5% 78.2% 70% 77% .01 .19
Ethnicity (% Caucasian) 68% 44% 58% 66% <.0001 .19
% HIV+ clinically stable - 100% 41.8% 0% - -
% Baseline NP impairment 22% 28% 25% 15% .22 .05
Overall impairment (GDS) 0.32 (0.38) 0.41 (0.48) 0.36 (0.43) 0.29 (0.32) .08 .08

GDS: Global Deficit Score

P-value1: comparisons between the HIV+ and HIV− samples

P-value2: comparisons between the reference and the validation samples