Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Variation in thresholds for reporting mobility disability between national population subgroups and studies.

David Melzer1, Tzuo-Yun Lan, Brian D M Tom

  • 1Department of Public Health and Primary Care, University of Cambridge, Cambridge CB2 2SR, UK. dm214@medschl.cam.ac.uk

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|February 9, 2005
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Chondrocalcinosis and the haemochromatosis-linked <i>HFE</i> C282Y homozygous variant in the UK Biobank.

EULAR rheumatology open·2026
Same author

Genetic landscape of adult executive function reveals a cell-type-specific developmental origin.

Nature communications·2026
Same author

Dynamic Factor Analysis for Sparse and Irregular Longitudinal Data: An Application to Metabolite Measurements in a COVID-19 Study.

Statistics in medicine·2026
Same author

A Tutorial on Optimal Dynamic Treatment Regimes.

Statistics in medicine·2026
Same author

Clinical Manifestations.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025
Same author

Predictors of MRI-estimated brain iron deposition in dementia and Parkinson's disease-associated subcortical regions: Genetic and observational analysis in UK Biobank.

Journal of Alzheimer's disease : JAD·2025

Older adults

Area of Science:

  • Gerontology
  • Public Health
  • Sociology of Aging

Background:

  • Disability assessments rely on self-reported difficulties in daily activities using broad categories.
  • Understanding variations in reporting thresholds for mobility limitations across demographic groups is limited.
  • Sociodemographic factors may influence how older adults perceive and report mobility impairments.

Purpose of the Study:

  • To estimate performance thresholds for reporting mobility disability across sociodemographic subgroups.
  • To compare self-reported and objectively measured mobility performance in two national studies.
  • To identify disparities in disability reporting among older populations.

Main Methods:

  • Utilized data from the U.S. National Health and Nutrition Examination Study (NHANES III) and the Longitudinal Aging Study Amsterdam (LASA).

Related Experiment Videos

  • Developed a validated index of mobility-related physical limitations (MOBLI) using gait speed, chair stands, and peak expiratory flow.
  • Employed latent probit models to determine thresholds for reporting difficulty or inability to walk medium distances.

    • Main Results:

    • Mobility disability reporting thresholds varied significantly by age and income in older Americans.
    • Younger and higher-income older adults reported limitations at more severe performance levels compared to older and lower-income individuals.
    • Differences in reporting thresholds were observed for inability but not difficulty based on race; no significant differences were found for sex or education.

    Conclusions:

    • Significant differences exist in mobility disability reporting thresholds, particularly among age and income groups in the U.S. older population.
    • These variations suggest underlying perceptual, attitudinal, or environmental factors influencing self-reporting.
    • Further research is warranted to elucidate the drivers of these reporting disparities.