Danish 1905 Cohort Study, 1998 (ICPSR 3960)
Longitudinal Study of Aging Danish Twins, 1995 (ICPSR 21041)
National Health and Aging Trends Study (NHATS), [United States] (ICPSR 37107)
The National Health and Aging Trends Study (NHATS) began in 2011 and fosters research to guide efforts to reduce disability, maximize health and independent functioning, and enhance quality of life at older ages. NHATS aims to provide the basis for understanding trends in late-life functioning, how these differ for various population subgroups, and the economic and social consequences of aging and disability for individuals, families, and society.
NHATS gathers information on a nationally representative sample of Medicare beneficiaries ages 65 and older. The sample is refreshed periodically so that researchers may study national-level disability trends as well as individual trajectories. Annual, in-person interviews collect detailed information on the disablement process and its consequences.
The NHATS interview is guided by a conceptual framework that recognizes physical and cognitive capacity is distinct from the environment in which activities take place. Among the specific content areas included are: the physical, social, technological and service environment, physical and cognitive capacity, use of assistive devices and rehabilitation, help received with daily activities (self-care, household, and medical), participation in valued activities, and wellbeing. A last month of life interview focuses on quality of end of life care. Periodically caregivers of NHATS respondents are interviewed in the supplemental National Study of Caregiving (NSOC). Linkages to Medicare records are also available.
Content was developed by a multidisciplinary team of researchers from the fields of demography, geriatric medicine, epidemiology, health services research, economics, and gerontology. NHATS is being led by the Johns Hopkins University Bloomberg School of Public Health in collaboration with the University of Michigan, with data collection by Westat, and support from the National Institute on Aging.
National Health Interview Survey, 1990: Assistive Devices Supplement (ICPSR 6139)
National Health Interview Survey, 1994: Second Supplement on Aging (ICPSR 2563)
National Health Interview Survey, 2004 (ICPSR 4349)
National Health Interview Survey, 2005 (ICPSR 4606)
National Health Interview Survey, 2006 (ICPSR 20681)
National Health Interview Survey, 2007 (ICPSR 27201)
National Health Interview Survey, 2008 (ICPSR 27341)
National Health Interview Survey, 2009 (ICPSR 28721)
National Home and Hospice Care Survey, 2000 (ICPSR 3791)
National Home and Hospice Care Survey, 2007 (ICPSR 28961)
The National Home and Hospice Care Survey (NHHCS) was reintroduced into the field in 2007 after a 7-year break. During that time, the survey was redesigned and expanded to include a computer-assisted personal interviewing (CAPI) system, many new data items, and larger sample sizes of current home health patients and hospice discharges. All agencies that participated in the survey were either certified by Medicare and/or Medicaid or were licensed by a state to provide home health and/or hospice services and currently or recently served home health and/or hospice patients. Agencies that provided only homemaker services or housekeeping services, assistance with instrumental activities of daily living (IADLs), or durable medical equipment and supplies were excluded from the survey. The 2007 NHHCS included a supplemental survey of home health aides employed by home health and/or hospice agencies, called the National Home Health Aide Survey (NHHAS). The 2007 NHHCS data were collected through in-person interviews with agency directors and their designated staffs; no interviews were conducted directly with patients or their families and/or friends. Agency data collected, available in agency administrative records, included information on the year an agency was established, the types of services an agency provided, referral sources, specialty programs, and staffing characteristics. Data collected on home health patients and hospice discharges, available in medical records, included age, sex, race and ethnicity, services received, length of time since admission, diagnoses, medications taken, advance directives, and many other items.
The National Home Health Aide Survey (NHHAS), the first national probability survey of home health aides, was designed to provide national estimates of home health aides employed by agencies that provide home health and/or hospice care. The NHHAS survey instrument included sections on recruitment, training, job history, family life, management and supervision, client relations, organizational commitment and job satisfaction, workplace environment, work-related injuries, and demographics.