Differences in healthy longevity by HIV status and viral load among older South African adults: an observational cohort modelling study

Collin Payne*, Brian House, Chido Chinogurei, Carlos Riumallo Herl, Chodziwadziwa Kabudula, Lindsay Kobayashi, Joshua A. Salomon, Jennifer Manne-Goehler

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Background: The population of people living with HIV in South Africa is rapidly ageing due to increased survivorship attributable to antiretroviral therapy (ART). We sought to understand how the combined effects of HIV and ART have led to differences in healthy longevity by HIV status and viral suppression in this context. Methods: In this observational cohort modelling study we use longitudinal data from the 2015 baseline interview (from Nov 13, 2014, to Nov 30, 2015) and the 2018 longitudinal follow-up interview (from Oct 12, 2018, to Nov 7, 2019) of the population-based study Health and Ageing in Africa: a Longitudinal Study of an INDEPTH Community in South Africa (HAALSI) to estimate life expectancy and disability-free life expectancy (DFLE) of adults aged 40 years and older in rural South Africa. Respondents who consented to HIV testing, responded to survey questions on disability, and who were either interviewed in both surveys or who died between survey waves were included in the analysis. We estimate life expectancy and DFLE by HIV status and viral suppression (defined as <200 copies per mL) using Markov-based microsimulation. Findings: Among the 4322 eligible participants from the HAALSI study, we find a clear gradient in remaining life expectancy and DFLE based on HIV serostatus and viral suppression. At age 45 years, the life expectancy of a woman without HIV was 33·2 years (95% CI 32·0–35·0), compared with 31·6 years (29·2–34·1) a woman with virally suppressed HIV, and 26·4 years (23·1–29·1) for a woman with unsuppressed HIV; life expectancy for a 45 year old man without HIV was 27·2 years (25·8–29·1), compared with 24·1 years (20·9–27·2) for a man with virally suppressed HIV, and 17·4 years (15·0–20·3) for a man with unsuppressed HIV. Men and women with viral suppression could expect to live nearly as many years of DFLE as HIV-uninfected individuals at ages 45 years and 65 years. Interpretation: These results highlight the tremendous benefits of ART for population health in high-HIV-prevalence contexts and reinforce the need for continued work in making ART treatment accessible to ageing populations. Funding: National Institutes of Health.

Original languageEnglish
Pages (from-to)e709-e716
JournalThe Lancet HIV
Volume9
Issue number10
DOIs
Publication statusPublished - Oct 2022

Bibliographical note

Funding Information:
This work was supported by the National Institute of Aging at the National Institutes of Health (NIH; grant numbers 1P01AG041710–01A1, HAALSI – Health and aging in Africa: a longitudinal study of an INDEPTH community in South Africa). The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH. The HAALSI study is nested within the Agincourt Health and Socio-demographic Surveillance System, a node of the South African Population Research Infrastructure Network supported by the Department of Science and Innovation, the University of the Witwatersrand, and the Medical Research Council, South Africa, and previously the Wellcome Trust, UK (Grants 058893/Z/99/A; 069683/Z/02/Z; 085477/Z/08/Z; 085477/B/08/Z). CFP is supported by an Australian Research Council Discovery Early Career Researcher Award (project number DE210100087) funded by the Australian Government, and by an ANU Futures Scheme Award funded by the Australian National University. CRH received funding from the EU's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement number 840591.

Publisher Copyright:
© 2022 The Author(s). Published by Elsevier Ltd.

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