The Study on Global Ageing and Adult Health (SAGE) is part of an ongoing program of work to compile comprehensive longitudinal information on the health and well-being of adult populations and the ageing process. The core SAGE collects data on adults aged 18+ years, with an emphasis on populations aged 50+ years, from nationally representative samples in six countries: China, Ghana, India, Mexico, Russian Federation and South Africa. The study is composed of three stages.
Wave 1 total sample size is over 40,000 individuals.
Wave 2 data collection was completed in 2014/15 in five countries. Wave 2 data collection was released in the public domain at the end 2020.
Wave 3 data collection was completed in March 2020.
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