Health and Retirement Study
The University of Michigan Health and Retirement Study (HRS) is a longitudinal panel study that surveys a representative sample of approximately 20,000 people in America and provides multidisciplinary data that researchers can use to address important questions about the challenges and opportunities of aging.

Free? Yes, with registration. Restricted data sets require separate applications

National Study of Licensed Social Workers (2004)
This national study from the National Association of Social Workers provides baseline data that can guide policy and planning to assure an appropriately trained social work workforce will be in place to meet the current and future needs of older adults.

Free? No; contact to request access

SEER-Medicare Health Outcomes Survey (SEER-MHOS) Linked Data Resource
The SEER-MHOS data resource links two large population-based sources of data that provide detailed information about elderly persons with cancer: the Surveillance, Epidemiology and End Results (SEER) External Web Site Policy program of cancer registries and the Medicare Health Outcomes Survey (MHOS) that provides information about the health-related quality of life (HRQOL) of Medicare Advantage Organization (MAO) enrollees. From the National Cancer Institute.

Free? Yes