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Author Topic: Newer HIV Regimens May Require Less Strict Adherence  (Read 2106 times)

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Offline Jim Allen

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Newer HIV Regimens May Require Less Strict Adherence
« on: September 15, 2019, 05:52:15 pm »
To be honest nothing really new, the threshold for optimal adherence has been shown before in data & studies to be wider than the 90-95% goal, though I think it's still wise to aim for maximum adherence

https://www.poz.com/article/newer-hiv-regimens-may-require-less-strict-adherence

Newer HIV Regimens May Require Less Strict Adherence
A new study indicates that the level of adherence required for viral suppression may be lower than previously understood.

Quote
Background: A benchmark of near-perfect adherence (≥95%) to antiretroviral therapy (ART) is often cited as necessary for HIV viral suppression. However, given newer, more effective ART medications the threshold for viral suppression might be lower. We estimated the minimum ART adherence level necessary to achieve viral suppression.

Settings: The Patient-centered HIV Care Model demonstration project.

Methods: Adherence to ART was calculated using the Proportion of Days Covered (PDC) measure for the 365-day period prior to each viral load test result, and grouped into five categories (<50%, 50%-<80%, 80%-<85%, 85%-<90%, and ≥90%). Binomial regression analyses were conducted to determine factors associated with viral suppression (HIV RNA <200 copies/mL); demographics, PDC category and ART regimen type were explanatory variables. Generalized estimating equations with an exchangeable working correlation matrix accounted for correlation within subjects. In addition, probit regression models were used to estimate adherence levels required to achieve viral suppression in 90% of HIV viral load tests.

Results: The adjusted odds of viral suppression did not differ between persons with an adherence level of 80%-<85% or 85%-<90% and those with an adherence level of ≥90%. Additionally, the overall estimated adherence level necessary to achieve viral suppression in 90% of viral load tests was 82% and varied by regimen type; integrase inhibitor- and non-nucleoside reverse transcriptase inhibitor-based regimens achieved 90% viral suppression with adherence levels of 75% and 78%, respectively.

Conclusions: The ART adherence level necessary to reach HIV viral suppression may be lower than previously thought and may be regimen dependent.

https://journals.lww.com/jaids/Abstract/publishahead/Antiretroviral_Adherence_Level_Necessary_for_HIV.96325.aspx
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