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Uncovering ART adherence inconsistencies: An assessment of sustained adherence among adolescents in South Africa

Zhou, Siyanai, Cluver, Lucie, Shenderovich, Yulia and Toska, Elona 2021. Uncovering ART adherence inconsistencies: An assessment of sustained adherence among adolescents in South Africa. Journal of the International AIDS Society 24 (10) , e25832. 10.1002/jia2.25832

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Abstract

Introduction Antiretroviral treatment (ART) adherence rates are lower among adolescents living with HIV (ALHIV) than among adults and children, but more evidence is needed on long-term sustained ART adherence among ALHIV. This study assesses rates of sustained ART adherence in a cohort of adolescents in South Africa. Methods A prospective cohort of adolescents (10-19 years) living with HIV (baseline sample N = 1 046, 55% female, mean age 13.6) in the Eastern Cape Province in South Africa were interviewed at baseline (2014-15) and followed-up twice (2015-16, 2017–18). All adolescents ever initiated on treatment in 52 government health facilities were traced (with 90% uptake, 94% retention at Wave 2, and 97% retention at Wave 3, 3.4% mortality) and their clinic records were extracted where available. We investigate sustained ART adherence among adolescents interviewed at all three waves of data collection (N = 933). To quantify adherence at each study wave, we used self-reported past-week adherence (including weekdays and weekends). Self-reported adherence was validated using HIV-1 RNA viral load (>50 copies/mL cut-off) reported in clinic records, in a random-intercept logistic regression. Results and discussion At baseline, approximately 66% (N = 615) of adolescents reported past-week ART adherence, and of these 45.3% reported adherence at both baseline and follow-up. Only 37.1% of the sample reported sustained past-week ART adherence over the three waves of the study. Most adolescents (N = 587, 62.9%) report inconsistent adherence across time (including 6.4% disengaged from care). Older (P = 0.007) and adolescents with horizontally acquired HIV (P = 0.002) were more likely to report inconsistent adherence across time. Controlling for socio-demographic characteristics, past-week adherence was associated with non-detectable viral load (aOR 1.72, 95%CI 1.14-2.59, P = 0.009). Overall, of the adolescents with viral load measurements at study Wave 1 and Wave 2, 50.6% maintained undetectable viral load for the preceding year. Conclusions Adolescents living with HIV reported very low rates of sustained ART adherence. Adherence reported at a single time may mask high rates of variability in adherence over time. These findings highlight the urgent need for enhanced and effective interventions to assist ALHIV with ART adherence through the challenging years of adolescence.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Social Sciences (Includes Criminology and Education)
Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer)
Additional Information: This is an open access article under the terms of the Creative Commons Attribution License
Publisher: Wiley Open Access
ISSN: 1758-2652
Date of First Compliant Deposit: 28 October 2021
Date of Acceptance: 20 September 2021
Last Modified: 03 Nov 2021 10:00
URI: https://orca.cardiff.ac.uk/id/eprint/145151

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