Creating a computer adaptive test version of the late-life function and disability instrument.
Background: This study applied item response theory (IRT) and computer adaptive testing (CAT) methodologies to develop a prototype function and disability assessment instrument for use in aging research. Herein, we report on the development of the CAT version of the Late-Life Function and Disability...
| Publicado en: | Journals of Gerontology Series A: Biological Sciences & Medical Sciences Vol. 63; no. 11; pp. 1246 - 1257 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Nov2008
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105602793&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105602793 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10795006 JGA jtl: Journals of Gerontology Series A: Biological Sciences & Medical Sciences issn: 10795006 maglogo: N pubinfo: dt: Nov2008 vid: 63 iid: 11 pid: 622 pub: Oxford University Press / USA artinfo: ui: 105602793 35725387 NLM19038841 2010141395 10.1093/gerona/63.11.1246 NLM19038841 PMC2718692 105602793 ppf: 1246 ppct: 11 formats: tig: atl: Creating a computer adaptive test version of the late-life function and disability instrument. aug: au: Jette AM Haley SM Ni P Olarsch S Moed R Jette, Alan M Haley, Stephen M Ni, Pengsheng Olarsch, Sippy Moed, Richard affil: Health & Disability Research Institute, Boston University School of Public Health, Boston, MA 02118, USA sug: subj: Instrument Construction Instrument Validation Outcome Assessment Rehabilitation, Geriatric Evaluation Aged Aged, 80 and Over Descriptive Statistics Factor Analysis Female Funding Source Geriatric Functional Assessment Health Status Indicators Male Massachusetts Pearson's Correlation Coefficient Prospective Studies Rasch Analysis Reliability and Validity Sensitivity and Specificity Spearman's Rank Correlation Coefficient Validation Studies Human Aged: 65+ years Aged, 80 & over Female Male ab: Background: This study applied item response theory (IRT) and computer adaptive testing (CAT) methodologies to develop a prototype function and disability assessment instrument for use in aging research. Herein, we report on the development of the CAT version of the Late-Life Function and Disability Instrument (Late-Life FDI) and evaluate its psychometric properties.Methods: We used confirmatory factor analysis, IRT methods, validation, and computer simulation analyses of data collected from 671 older adults residing in residential care facilities. We compared accuracy, precision, and sensitivity to change of scores from CAT versions of two Late-Life FDI scales with scores from the fixed-form instrument. Score estimates from the prototype CAT versus the original instrument were compared in a sample of 40 older adults.Results: Distinct function and disability domains were identified within the Late-Life FDI item bank and used to construct two prototype CAT scales. Using retrospective data, scores from computer simulations of the prototype CAT scales were highly correlated with scores from the original instrument. The results of computer simulation, accuracy, precision, and sensitivity to change of the CATs closely approximated those of the fixed-form scales, especially for the 10- or 15-item CAT versions. In the prospective study, each CAT was administered in <3 minutes and CAT scores were highly correlated with scores generated from the original instrument.Conclusions: CAT scores of the Late-Life FDI were highly comparable to those obtained from the full-length instrument with a small loss in accuracy, precision, and sensitivity to change. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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