Growth curve modelling to determine distinct body mass index trajectory groups in HIV-positive adults on ART in South Africa.

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ID: 17783
2019
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Abstract
Obesity is a major long-term concern in HIV-positive patients due to the pathogenic link between obesity and non-communicable chronic diseases (NCD). We aim to characterize changes in body mass index (BMI) over time on antiretroviral therapy (ART) and investigate the association between weight gain and survival in South Africa.Prospective cohort study among HIV-positive adults on first-line ART between April 2004-2015 in Johannesburg, South Africa. We used latent-class growth modelling (adjusted for age, gender, and CD4 count) to identify groups of individuals with similar patterns of change in BMI over time.11,263 patients were included. The best fit model involved two linear and two quadratic trajectories. 35% of patients categorized into group one (mean BMI at ART initiation, 20.4 kg/m; mean BMI after 8 years of follow-up, 20.9 kg/m), 38% into group two (24.5 to 26.2 kg/m), 21% into group three (29.5 to 32.6 kg/m)and 6% into group four (36.5 to 40.0 kg/m). Over the 8 years of follow-up, 6% of our cohort went down in BMI standard category, while 45% went up. The largest increase occurred in the first 12 months on ART. In years two through eight, we saw a more gradual increase in BMI.The largest gain in BMI in HIV patients occurred in the first year on ART. During follow-up, over 50% of our population changed BMI categories putting them at increased risk for NCDs. Consistent counselling on nutritional and lifestyle changes could help improve ART patients' long term health outcomes.
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brennan2019growthaids Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Brennan, Alana T;Berry, Kaitlyn M;Rosen, Sydney;Stokes, Andrew;Crowther, Nigel J;George, Jaya;Raal, Frederick;Cassim, Naseem;Sanne, Ian;Long, Lawrence;Fox, Matthew P;
Journal aids (london, england)
Year 2019
DOI
10.1097/QAD.0000000000002302
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