ArticleBMJ open2016
Measurement of the severity of disability in community-dwelling adults and older adults: interval-level measures for accurate comparisons in large survey data sets.
Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 32 citations in OpenAlex.
- Intersection of gender and class in the assessment of self-rated health in the Spanish population: a classification tree study.International journal for equity in health · 2026Article
- Examining the factors associated with disabilities among hypertensive patients in India.Narra J · 2025Article
- Dysphagia and Functional Limitations Among Adults in the United States: Findings from the 2022 National Health Interview Survey.Dysphagia · 2024Article
- Healthcare services access challenges and determinants among persons with disabilities in Bangladesh.Scientific reports · 2024Article
- Revisiting unstable disability and the fluctuations of frailty: a measurement burst approach.Age and ageing · 2024Article
- Dimensionality and invariance of ADL, IADL, BI-M2/WG-SS, and GALI in large surveys in France (2008-2014) and implications for measuring disability in epidemiology.Archives of public health = Archives belges de sante publique · 2023Article
- A machine learning approach to determine the influence of specific health conditions on self-rated health across education groups.BMC public health · 2023Article
- Earthquake Response for Students with Different Severe Degrees of Disabilities: An Investigation of the Special Education Classes in Primary Schools in Taipei.International journal of environmental research and public health · 2022Article
- Inaccurate Use of the Upper Extremity Fugl-Meyer Negatively Affects Upper Extremity Rehabilitation Trial Design: Findings From the ICARE Randomized Controlled Trial.Archives of physical medicine and rehabilitation · 2021Article
- Comparisons of the Association of Family and Social Factors With Functional Limitations Across the United States, Mexico, and South Korea: Findings From the HRS Family of Surveys.Journal of aging and health · 2020Article
- Measuring Activity Limitations Within the National Health and Aging Trends Study (NHATS).The Gerontologist · 2020Article
- Do psychosocial factors modify the negative association between disability and life satisfaction in old age?PloS one · 2019Article
- Cross-national health comparisons using the Rasch model: findings from the 2012 US Health and Retirement Study and the 2012 Mexican Health and Aging Study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2018Article
- Disability Measurement for Korean Community-Dwelling Adults With Stroke: Item-Level Psychometric Analysis of the Korean Longitudinal Study of Ageing.Annals of rehabilitation medicine · 2018Article
- Item-level psychometrics of the ADL instrument of the Korean National Survey on persons with physical disabilities.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2017Article
- Looking Through the Patients' Eyes: Measuring Patient Satisfaction in a Public Hospital.Journal of patient experience · 2017Article
- Associations between community-level disaster exposure and individual-level changes in disability and risk of death for older Americans.Social science & medicine (1982) · 2017Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
objectivesTo (1) create a single metric of disability using Rasch modelling to be used for comparing disability severity levels across groups and countries, (2) test whether the interval-level measures were invariant across countries, sociodemographic and health variables and (3) examine the gains in precision using interval-level measures relative to ordinal scores when discriminating between groups known to differ in disability.
designCross-sectional, population-based study. SETTING/
participantsData were drawn from the Survey of Health, Ageing and Retirement in Europe (SHARE), including comparable data across 16 countries and involving 58 489 community-dwelling adults aged 50+.
main outcome measuresA single metric of disability composed of self-care and instrumental activities of daily living (IADLs) and functional limitations. We examined the construct validity through the fit to the Rasch model and the know-groups method. Reliability was examined using person separation reliability.
resultsThe single metric fulfilled the requirements of a strong hierarchical scale; was able to separate persons with different levels of disability; demonstrated invariance of the item hierarchy across countries; and was unbiased by age, gender and different health conditions. However, we found a blurred hierarchy of ADL and IADL tasks. Rasch-based measures yielded gains in relative precision (11-116%) in discriminating between groups with different medical conditions.
conclusionsEqual-interval measures, with person-invariance and item-invariance properties, provide epidemiologists and researchers with the opportunity to gain better insight into the hierarchical structure of functional disability, and yield more reliable and accurate estimates of disability across groups and countries. Interval-level measures of disability allow parametric statistical analysis to confidently examine the relationship between disability and continuous measures so frequent in health sciences (eg, cholesterol, blood pressure, C reactive protein).
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