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Table 2 Demographic and clinical characteristics of main study and current study participants

From: DRD2 and DRD4 genes related to cognitive deficits in HIV-infected adults who abuse alcohol

  Main study Current study P values
n = 112 N = 267
Age, mean (SD) 44.1 (7.7) 45.1 (7.1) 0.66
Sex, no (%)    0.72
 Male 67 (60) 173 (65)  
 Female 45 (40) 94 (34)  
Education no (%)    0.24
 8th grade or less 13 (12) 19 (7)  
 High school diploma 73 (65) 190 (69)  
 Some college 26 (23) 57 (24)  
Race/ethnicity no (%)    0.26
 Caucasian 17 (15) 21 (8)  
 African–American 80 (72) 203 (76)  
 Hispanic 15 (13) 43 (16)  
Alcohol use, mean (SD)
 Number of standard drinks (past 90 days) 100 (50.1) 190 (100.1) 0.10
 Lifetime 22 (10.5) 23.8 (10.9) 0.24
 AUDIT score 14 (7.5) 16 (8.0) 0.09
Other drugs, mean (SD)
 Number of times cocaine use (past 90 days) 23.5 (16.8) 33.5 (19.8) 0.25
 Number of times marijuana use (past 90 days) 19.3 (12.5) 25.6 (20.9) 0.63
HIV characteristics, mean (SD)
 CD4 count 412.9 (318.4) 441.4 (286.9) 0.73
Viral load no (%)    0.16
 Undetectable 45 (40) 128 (48)  
 50–10,000 39 (35) 80 (30)  
 10,001–30,000 8 (7) 29 (11)  
 30,000 or more 20 (18) 29 (11)  
 Taking ART 76 (68) 216 (81) 0.84
Cognitive measures, mean (SD)
 Executive skills T-scores 50.1 (9.0) 45.2 (10.9) 0.93
 Memory skills (learning) T-scores 45.9 (10.1) 48.2 (9.1) 0.18
 Memory skills (recall) T-scores 48.1 (9.8) 40.0 (10.5) 0.11
 Cognitive flexibility T-scores 40.4 (10.4) 45.7 (10.8) 0.09
 Visual memory T-scores 47.9 (11.9) 43.1 (13.8) 0.09