Adherence and persistence with non-nucleoside reverse transcriptase inhibitor-based antiretroviral regimens.
2012
Objective: The objective of this study was to examine adherence and persistency in HIV patients initiating first-line combination antiretroviral therapy (cART) with a non-nucleoside reverse transcriptase inhibitor (NNRTI)-based regimen. Methods: Using US health insurance records, the authors identified all persons aged ≥ 18 years with HIV, who began NNRTI-based cART between 1 January 2003 and 30 September 2009. They examined adherence using proportion of days covered (PDC), and non-persistency based on evidence of discontinuation, switching or augmentation. Differences in non-adherence (1 - PC) and non-persistency were compared over 12 months, between three treatment groups: i) efavirenz, emtricitabine and tenofovir as a fixed-dose combination (‘EFV/FTC/TDF'); ii) EFV-based regimens other than EFV/TDF/FTC, with ≥ 2 NRTIs (‘EFV + ≥ 2 NRTIs'); and iii) nevirapine-based regimens with ≥ 2 NRTIs (NVP + ≥ 2 NRTIs). Results: There were 1874 patients receiving EFV/FTC/TDF, 893 receiving EFV + ≥ 2 NRTIs and 207 re...
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