Characteristic Bivariable Multivariable
Odds Ratio (95% Confidence Interval) Odds Ratio (95% Confidence Interval)
First antiretroviral therapy regimen    
 NNRTI 1.00 (-)  
 PI Single 1.55 (0.69, 3.46)  
 Boosted PI 2.85 (1.13, 7.22)  
 Other 4.60 (1.86, 11.35)  
History of high blood pressure (at the time of ultrasound)    
 No 1.00 (-) 1.00 (-)
 Yes 2.51 (1.19, 5.29) 2.68 (1.17, 6.13)
Age at carotid ultrasound date    
≤45 1.00 (-) 1.00 (-)
 46-55 2.60 (1.18, 5.75) 2.57 (1.08, 6.14)
 ≥56 4.90 (2.08, 11.56) 5.16 (2.02, 13.19)
Adherence in the first year of antiretroviral therapy    
<95% 1.00 (-) 1.00 (-)
 ≥95% 0.31 (0.13, 0.73) 0.45 (0.17, 1.20)
History of injection drug use    
 No 1.00 (-) 1.00 (-)
 Yes 3.81 (1.3, 11.18) 4.55 (1.40, 14.79)
 Unknown 0.91 (0.25, 3.36) 1.43 (0.35, 5.79)
Years on antiretroviral therapy before carotid ultrasound date 1.12 (1.04, 1.20) 1.10 (1.01, 1.19)
Table 2: Results of the logistic regression models modeling the probability of
carotid ultrasound abnormality.
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