|Dataset full name:
||National Health and Aging Trends Study
||The National Health and Aging Trends Study (NHATS) collects individual level information on a nationally representative sample of Medicare beneficiaries’ ages 65 and older through in-depth interviews. It is a longitudinal study that began in 2011 with yearly follow-up of each participant. NHATS is designed to collect data on late life trends, functional decline, and impact of disability on socio-economic dynamics of individual functioning, and burden on family and society. The data includes a broad set of activities including self care, care giving, environment, technology usage, types of mobility device, early life status, household, income, medical, and participation in productive/social activities.
||Aging, disability, late-life functioning, physical, cognitive, medical needs
||National Institutes of Health (NIH), National Institute on Aging (NIA)
||Health conditions/Disability measures
||Arthritis, Broken bones, Cancer, Dementia/Alzheimer's, Diabetes, Falls, Heart attack, Heart disease , Osteoporosis, Stroke, Other serious illness
||Depression, Anxiety, Visual disability, Hearing disability, Speaking disability, Physical impairments/capacity, Cognition, Mobility limitations/equipment use, Functional limitations, ADLs, IADLs
||Measures/outcomes of interest
||Housing and household, self care, participation, physical/cognitive activities, health status and conditions, children and siblings, environment, environment modification, community participation, technology, mobility device, sensory impairment, physical impairments, sensory capacity, physical capacity, driving, transportation, self care activities, medical care, smoking, labor force participation, home ownership, car ownership, long term care, insurance, income, assets, facility and caregiver information.
||Medicare beneficiaries (65 years old or older)
||2011 (Round 1) : 8,245
|Unit of Observation
|Data Collection Mode
||2011, 2012, 2013 onward
|Data Collection Frequency
||Strengths and limitations
||The NHATS sample is drawn from the Medicare enrollment file, oversampling the oldest age groups and Black non-Hispanic persons. 96% of persons ages 65 and older in the US are Medicare beneficiaries.
Replenishment sampling planned for ongoing waves. Includes unique variables regarding environment, modification, accommodations, care giver burden, information on early life, and burden of disability on families, and society.
71% response rate (wave 1). Validated procedure between self-reported and performance-based measures.
Restricted data includes NHATS geographic data and Medicare data linked to NHATS sample person.
||Very limited baseline biomarker data.
|Data Access Requirements
||Data Use Agreement, No Cost
|Dataset components (where applicable)
||Public Use Data:
Sample Person (SP) File - Sample Person survey and Facility Questionnaire (FQ) data
Tracker file - Tracks status of total sample for each round of surveys includes weights for differential non-response
Other Person (OP) file - each record represents a person identified in the SP file including proxy respondents, spouse/partner, household member, caretaker, social network member etc.
Pubic Use NHATS data can be linked to additional information including the following:
Sensitive data: National Study of Caregivers, NHATS Sample Person Sensitive Demographics file, NHATS Other Person (Spouse/partner) Sensitive Demographic file.
Restricted data files: linked Medicare data and geographic data.
||Freedman VA, Kasper JD, Cornman JC, Agree EM, Bandeen-Roche K, Mor V, Spillman BC, Wallace R, Wolf DA. (2011). Validation of new measures of disability and functioning in the National Health and Aging Trends Study. J Gerontol A Biol Sci Med Sci 66(9): 1013-21 http://www.ncbi.nlm.nih.gov/pubmed/21715647