The World Health Organization's Study on global AGEing and adult health (SAGE) - is the part of a multi-country project conducted in China, Ghana, India, Mexico, Russian Federation and South Africa. The SAGE India sample is nationally representative and was implemented in six states – Assam, Karnataka, Maharashtra, Rajasthan, Uttar Pradesh and West Bengal. WHO-SAGE is collecting data on adults aged 50 years and older, along with a smaller comparison sample of adults 18-49 years. The baseline of the SAGE India was conducted in 2003, Wave 1 was during 2007-08, Wave 2 was conducted 2015 and the Wave 3 was undertaken between 2019-2020 in India.
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