National Health and Aging Trend Study (NHATS) has conducted annual in-person interviews with a nationally representative sample of Medicare beneficiaries aged 65 or older. The study is designed as a platform for scientific study of late-life disability trends and trajectories and has supported research in disability reduction, independent functioning maximization, and quality of life enhancement at older ages. From the interviews, the study collected longitudinal data of participants including health status data, physical function data, cognitive function data, social factors data, and healthcare utilization data. The study is conducted by investigators at Johns Hopkins University and sponsored by the National institute of Aging.
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