Name File Type Size Last Modified
NPHA_Wave4_October2018.dat text/plain 1.6 MB 06/10/2021 12:38:PM
NPHA_Wave4_October2018.dta application/x-stata-dta 7 MB 06/10/2021 12:25:PM application/x-sas 72.9 KB 02/10/2021 12:21:PM
NPHA_Wave4_October2018.sav application/x-spss-sav 1013.8 KB 02/10/2021 12:29:PM
NPHA_Wave4_October2018.sps text/x-spss-syntax 54 KB 06/10/2021 12:38:PM
NPHA_Wave4_October2018_Codebook.pdf application/pdf 4 MB 02/10/2021 12:25:PM
NPHA_Wave4_October2018_Questionnaire.pdf application/pdf 1.3 MB 06/10/2021 11:44:AM
NPHA_Wave4_October2018_Survey_Report.pdf application/pdf 946.7 KB 06/10/2021 11:38:AM

Project Citation: 

Malani, Preeti, Kullgren, Jeffrey, and Solway, Erica. National Poll on Healthy Aging (NPHA), [United States], October 2018. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2021-06-11.

Project Description

Summary:  View help for Summary By tapping into the perspectives of older adults and their caregivers, the University of Michigan National Poll on Healthy Aging (NPHA) helps inform the public, health care providers, policymakers, and advocates on issues related to health, health care and health policy affecting Americans 50 years of age and older. The poll is designed as a recurring, nationally representative household survey of U.S. adults, which allows assessment of issues in a timely fashion. Launched in spring 2017, the NPHA is modeled after the highly successful University of Michigan C.S. Mott Children's Hospital National Poll on Children's Health. The NPHA grew out of a strong interest in aging-related issues among many members of the University of Michigan Institute for Healthcare Policy and Innovation (IHPI), which brings together more than 600 faculty who study health, health care and the impacts of health policy. IHPI directs the poll which is sponsored by AARP and Michigan Medicine, the University of Michigan academic medical center.

This project represents the fourth wave or fielding of NPHA in October 2018. This is a new sample of participants and cannot be joined or merged with the data from NPHA Waves 1-3. 

Scope of Project

Subject Terms:  View help for Subject Terms aging; demographic statistics; health attitudes; health behavior; household composition; brain health; memory; medications; loneliness; pets; health insurance
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 10/11/2018 – 10/31/2018 (Fall 2018)
Collection Date(s):  View help for Collection Date(s) 10/11/2018 – 10/31/2018
Universe:  View help for Universe
Adults ages 50-80 living in non-institutionalized settings in the United States of America.

Data Type(s):  View help for Data Type(s) survey data
Collection Notes:  View help for Collection Notes The data files listed in this study for NPHA Wave 4 represent the same variables/content, but have been converted to a variety of file formats for user convenience. 

NPHA Wave 1 can be found by visiting the study page, National Poll on Healthy Aging (NPHA), [United States], April 2017 (ICPSR 37305):

NPHA Wave 2 can be found by visiting the study page, National Poll on Healthy Aging (NPHA), [United States], October 2017 (Open ICPSR):

NPHA Wave 3 can be found by visiting the study page, National Poll on Healthy Aging (NPHA), [United States], March 2018 (Open ICPSR):


Response Rate:  View help for Response Rate The main survey completion rate for respondents ages 50-64 was 62%. The main survey completion rate for respondents ages 65-80 was 67%. Overall completion rate was 64%.
Sampling:  View help for Sampling Survey respondents were sampled from a nationally representative panel (KnowledgePanel from Ipsos, formerly GfK). See user guide for details about respondent selection and sampling.
Data Source:  View help for Data Source The National Poll on Healthy Aging Wave 4 is a primary data collection using survey methodology.
Collection Mode(s):  View help for Collection Mode(s) web-based survey
Weights:  View help for Weights
Three survey weights are included with the dataset, one for the full population of 50-80 year old respondents, one for those 50-64, and one for those ages 65-80. Weights should be applied to interpret population-level rates. See user guide for additional information about the weights.
Unit(s) of Observation:  View help for Unit(s) of Observation Individual
Geographic Unit:  View help for Geographic Unit Smallest geographic unit: State

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