The INDEPTH network comprises 49 Health and Demographic Surveillance System centres/sites (HDSSs) in 20 countries in Africa, Asia and Oceania which provide a platform for longitudinal, policy-oriented studies of health and mortality. Eight of these centres (Agincourt, South Africa; Ifakara, Tanzania; Nairobi, Kenya and Navrongo, Ghana in sub-Saharan Africa and Filabavi, Vietnam; Matlab, Bangladesh; Purworejo, Indonesia and Vadu, India, Thailand, and Vietnam in Asia; Papua New Guinea in Oceania) form the Adult Health and Ageing grouping. This group aims to establish and examine cohorts of older adults (50+ years) at differing stages of the epi-demographic transition to better understand social, economic and biological predictors of mortality, trajectories of disease and risk, changes in physical and cognitive function and the relationships between aging and social and economic wellbeing and productivity.

Data Collection
Completed and planned multi-site studies include:

The sample sizes and biomarkers collected/proposed for each study are shown in the table below.


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