期刊
PATIENT PREFERENCE AND ADHERENCE
卷 6, 期 -, 页码 427-433出版社
DOVE MEDICAL PRESS LTD
DOI: 10.2147/PPA.S31385
关键词
HIV; self-reported adherence; single tablet regimen; boosted protease inhibitors; nonnucleoside reverse-transcriptase inhibitors
Objective: To analyze self-reported adherence to antiretroviral regimens containing ritonavir-boosted protease inhibitors, nonnucleoside reverse transcriptase inhibitors (NNRTI), raltegravir, and maraviroc. Methods: Overall, 372 consecutive subjects attending a reference center for HIV treatment in Florence, Italy, were enrolled in the study, from December 2010 to January 2012 (mean age 48 years). A self-report questionnaire was filled in. Patients were defined as nonadherent if reporting one of the following criteria: <90% of pills taken in the last month, >= 1 missed dose in the last week, spontaneous treatment interruptions reported, or refill problems in the last 3 months. Gender, age, CD4, HIV-RNA, years of therapy, and type of antiretroviral regimen were analyzed with respect to adherence. Results: At the time of the questionnaire, 89.8% of patients had <50 copies/mL HIV-RNA and 14.2% were on their first combined antiretroviral therapy. 57% of patients were prescribed a regimen containing ritonavir boosted protease inhibitors (boosted PI), 41.7% NNRTI, 17.2% raltegravir, and 4.8% maraviroc; 49.5% of the subjects were on bis-in-die regimens, while 50.5% were on OD regimens, with 23.1% of these on the single tablet regimen (STR): tenofovir/emtricitabine/efavirenz. The nonadherence proportion was lower in NNRTI than in boosted-PI treatments (19.4% vs 30.2%), and even lower in STR patients (17.4%). In multivariable logistic regression, patients with the NNRTI regimen (OR: 0.56, 95% CI: 0.34-0.94) and the STR (OR: 0.45, 95% CI: 0.22-0.92) reported lower nonadherence. Efavirenz regimens were also associated with lower nonadherence (OR: 0.42, 95% CI: 0.21-0.83), while atazanavir/ritonavir regimens were associated with higher nonadherence. No other relation to specific antiretroviral drugs was found. A higher CD4 count, lower HIV-RNA, and older age were also found to be associated with lower nonadherence, while a longer time on combined antiretroviral therapy was related to higher nonadherence. Conclusion: STR maintains an advantage in improving adherence with respect to other combined antiretroviral therapies, even though new antiretroviral drugs and drug classes have become available in recent years.
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