Body mass index and mortality in a nationally representative cohort of south African adults.

ABSTRACT:

Aim

To examine the association between Body Mass Index (BMI) and all-cause mortality in South Africa.

Methods

Longitudinal data on adults 20 years and older from five waves (2008, 2010-11, 2012, 2014-15, and 2017) of the South African National Income Dynamics Study were analysed. Survival proportional hazard models, adjusted for sociodemographic and lifestyle characteristics, were used to estimate the relationship between BMI and mortality. Sensitivity analyses were conducted to assess the robustness of the estimates.

Results

Of the 12,402 eligible individuals, 10917 had valid BMI measurements and were included in the analyses. During a total of 83,077 person-years of observation, 1741 individuals died.Hazard ratios for all-cause mortality were significantly lower in

SUBMITTER: Cois A 

PROVIDER: S-EPMC12519294 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature