Adherence to antiretroviral therapy was among female (OR = 2.56, 95% CI: 1.09 - 5.97); Kinh (OR = 10.60; 95% CI: 1.32 - 85.27); income from1, 000, 000 VND / month-3, 000, 000 VND / month (OR=10.50; 95% CI: 1.15 - 96.07); number of CD4 over 350 (OR=7.72; 95% CI: 1.75 - 34.12); HIV stage without symptoms (OR = 7.89; 95% CI: 2.41 - 25.90); heavy alcoholism (OR = 10.18; 95% CI: 2.53-41.00).