Demographics AUD (N=99) Non-AUD (N=101) Statistical test p-value OR (95% CI)
Male; n (%) 77 (77.8) 56 (55.4) χ2=11.192 0.001 2.8 (1.5-5.2)
Age; mean (SD) 36.3 (11.1) 38.6 (10.6) t=-1.50, df=198 0.13  
Years of study; mean (SD) 9.1 (3.5) 9.9 (3.6) t=-1.70, df=194 0.09  
Employment situation          
Employed; n (%) 54 (55.1) 50 (49.5) χ2=0.625 0.42 1.2 (0,7-2,1)
Unemployed; n (%) 27 (27.6) 33 (32.7) χ2=0.620 0.43 0.7 (0.4-1.4)
Retired; n (%) 13 (13.3) 14 (13.9) χ2=0.015 0.90 0.9 (0.4-2.1)
Marital status          
Single; n (%) 50 (50.5) 45 (44.6) χ2=0.710 0.39 1.2 (0.7-2.2)
Married; n (%) 41 (41.4) 41 (40.6) χ2=0.014 0.90 1.0 (0.5-1.8)
Divorced or widower; n (%) 8 (8.1) 15 (14.9) χ2=2.252 0.13 0.5 (0.2-1.2)
Living alone; n (%) 19 (19.2) 5 (5.0) χ2=9.602 0.002 4.5 (1.6-12.7)
Use of tobacco; n (%) 27 (27.3) 11 (10.9) χ2=8.718 0.003 3.0 (1.4-6.6)
Illicit drug use; n (%) 36 (36.4) 14 (13.9) χ2=13.501 <0.001 3.5 (1.7-7.1)
Clinical background          
Years since HIV diagnosis; mean (SD) 4.0 (3.1) 4.8 (4.2) t=-1.45, df=198 0.14  
CD4 count; mean (SD) 501.1 (304.9) 515.1 (246.0) t=-0.32, df=158 0.74  
Viral copies count; mean (SD) 10762.3 (35861.1) 15380.2 (53639.6) t=-0.62, df=156 0.53  
Positive MDQ screening; n (%) 25 (25.3) 5 (5.0) χ2=16.162 <0.001 6.4 (2.3-17.7)
Sexual behavior          
Age at first sex; mean (SD) 15.2 (2.7) 17.1 (5.0) t=-3.26, df=192 0.001 1.1 (1.05-1.2)*
Condom use during first sex; n (%) 16 (16.8) 26 (26.0) χ2=2.418 0.120 0.5 (0.2-1.1)
Sexual orientation     χ2=3.829 0.050  
Non-heterosexual; n (%) 44 (44.4) 31 (31.0)     1.7 (0.9-3.1)
Heterosexual; n (%) 55 (55.6) 69 (69.0)     0.5 (0.3-1.0)
HIV Infection through sex; n (%) 82 (82.8) 74 (73.3) χ2=2.663 0.103 1.7 (0.8-3.4)
Sex with regular partner; n (%) 95 (96.0) 96 (95.0) χ2=0.096 0.756 1.2 (0.3-4.7)
Consistent condom use2; n (%) 2 (2.1) 6 (6.3) χ2=2.044 0.153 0.3 (0.06-1.6)
Sex with commercial partners; n (%) 27 (27.3) 12 (11.9) χ2=7.545 0.006 2.7 (1.3-5.8)
Consistent condom use; n (%)3 9 (33.3) 6 (54.5) χ2=1.472 0.225 0.4 (0.1-1.7)
Sex with non-regular partners; n (%) 84 (85.7) 58 (58.0) χ2=18.742 <0.001 4.3 (2.1-8.6)
Consistent condom use; n (%)4 17 (20.5) 12 (21.1) χ2=0.007 0.935 0.9 (0.4-2.2)
*For this variable, the OR and 95%CI were calculated through binary logistic regression.
Table 1: Demographic characteristics and clinical background.