Title: Impact of diabetes on longevity and disability-free life expectancy among older South African adults

Title: Impact of diabetes on longevity and disability-free life expectancy among older South African adults

Presenter: Collin Payne, School of Demography, ANU

Date and Time: about 1.20 -2.00 pm Tuesday 26 April
(after the presentation by Kim Xu)

Presentation: Room 4.69, RSSS Building, ANU, 146 Ellery Crescent, Acton and By Zoom (details below)


Abstract:
Understanding the coexisting effects of population aging and a rising burden of diabetes for healthy longevity is of key importance in South Africa. We used longitudinal data from the 2015 and 2018 waves of the “Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community in South Africa” (HAALSI) study to explore life expectancy (LE) and disability-free life expectancy (DFLE) of adults aged 45 and older with and without diabetes in rural South Africa. We estimated LE and DFLE by diabetes status using Markov-based microsimulation. We find a clear gradient in remaining LE and DFLE based on diabetes status. At age 45, a man without diabetes could expect to live an additional 26.8 [95% CI: 25.22 – 28.44] years, compared with 19.4 [95% CI: 15.59 – 22.79] years for a man with diabetes. For women, these figures were 33.7 [95% CI: 32.44 – 35.08] years for those without diabetes and 29.8 [26.26 – 33.17] years for those with diabetes. Individuals with diabetes lived proportionately more years subject to disability than individuals without diabetes. Additional analyses using marginal structural models to control for sociodemographic and health differences between diabetic and non-diabetic populations suggests that these factors only minimally explain LE and DFLE differences between these groups. Our findings highlight the large and important shortfall in healthy aging for people with diabetes in South Africa. This finding should motivate efforts to strengthen prevention and treatment efforts for diabetes and its complications for older adults in this setting.

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