Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability.
Background Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improving t...
| Publicado en: | Journal of Intellectual & Developmental Disability Vol. 37; no. 2; pp. 141 - 151 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jun2012
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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=104564050&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104564050 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13668250 DDI jtl: Journal of Intellectual & Developmental Disability issn: 13668250 maglogo: Y pubinfo: dt: Jun2012 vid: 37 iid: 2 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 104564050 75004961 10.3109/13668250.2012.682647 NLM22546020 104564050 ppf: 141 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability. aug: au: Gómez, Laura E. Arias, Benito Verdugo, Miguel Ángel Navas, Patricia sug: subj: Persons with Intellectual Disabilities Quality of Life Instrument Validation Methods Human Psychometrics Spain Adult Descriptive Statistics Male Female Young Adult Middle Age Summated Rating Scaling Self Report Questionnaires Coefficient alpha Data Analysis Software Interpersonal Relations Social Alienation Self-Efficacy Psychological Well-Being Funding Source Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Background Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improving the psychometric properties of the INTEGRAL Quality of Life Scale (i.e., fit statistics, person and item reliability coefficients) with RSM. Method The sample comprised 271 Spanish adults with intellectual disability. Results The results showed that the data fitted the model, point-biserial correlations were adequate, items showed precision, reliability of items (.98) and persons (.89) were adequate, and the response categories were suitable (thresholds were ordered). However, one item ('I feel excluded from society') did not fit the model and a few items were too easy for participants to achieve. Conclusions Although it seems necessary to include more difficult items and to delete one, the INTEGRAL Scale is a useful instrument with evidence of validity. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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