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Κυριακή 22 Μαΐου 2022

Supporting the Art: Medication Adherence Patterns in Persons Prescribed Ingestible Sensor-enabled Oral Pre-Exposure Prophylaxis to Prevent HIV Infection

alexandrossfakianakis shared this article with you from Inoreader
Abstract
Background
Timely, accurate adherence data may support oral PrEP success and inform prophylaxis choice. We evaluated an FDA-approved digital health feedback system (DHFS) with ingestible-sensor-enabled (IS) tenofovir-disoproxil-fumarate plus emtricitabine (Truvada®) in persons starting oral PrEP.
Methods
HIV-negative adults were prescribed IS-Truvada® with DHFS for 12 weeks to observe medication taking behavior. Baseline demographics, urine toxicology and self-report questionnaires were obtained. Positive detection accuracy and adverse events were computed as percentages, with Kaplan Meier Estimate for persistence-of-use. In participants persisting ≥ 28 days, adherence patterns (taking and timing) were analyzed and mixed-effects logistic regression modelled characteristics associated with treatment adherence.
Results
Seventy-one participants enrolled, mean age 37.6 years (range 18-69), 90.1% male, 77.5% white, 33.8% Hispanic, 95.8% housed and 74.6% employed. Sixty-three participants (88.7%) persisted ≥28 days, generating 4987 observation days, average 79.2 (29-105). Total confirmed doses were 86.2% (CI95 82.5, 89.4), decreasing over time, OR 0.899 (CI95 0.876, 0.923) per week, p < 0.001; 79.4% (CI95 66.7%, 87.3%) of participants had ≥80% adherence. Pattern analysis showed days without confirmed doses clustered (p = 0.003); regular dose timing was higher among participants with ≥80% confirmed doses (0.828, CI95 0.796 to 0.859) than among those with <80% (0.542, CI95 0.405 to 0.679) p < 0.001. In multi-predictor models, better adherence was associated with older age, OR 1.060 (CI95 1.033, 1.091) per year, p < 0.001; negative vs positive methamphetamine screen, OR 5.051 (CI95 2.252, 11.494), p < 0.001.
Conclusions
DHFS with IS-Truvada® distinguished adherent persons from those potentially at risk of prophylactic failure. Ongoing methamphetamine substance use may impact oral PrEP success.
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