Validation of a computer-adaptive test to evaluate generic health-related quality of life.
Background: Health Related Quality of Life (HRQoL) is a relevant variable in the evaluation of health outcomes. Questionnaires based on Classical Test Theory typically require a large number of items to evaluate HRQoL. Computer Adaptive Testing (CAT) can be used to reduce tests length while maintain...
| Publicado en: | Health & Quality of Life Outcomes Vol. 8; pp. 147 - 148 |
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| Autores principales: | , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
BioMed Central
2010
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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=104809153&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104809153 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14777525 1CPN jtl: Health & Quality of Life Outcomes issn: 14777525 maglogo: N pubinfo: dt: 2010 vid: 8 pid: 24147 pub: BioMed Central artinfo: ui: 104809153 NLM21129169 2010932223 10.1186/1477-7525-8-147 NLM21129169 PMC3022567 104809153 ppf: 147 ppct: 1 formats: tig: atl: Validation of a computer-adaptive test to evaluate generic health-related quality of life. aug: au: Rebollo, Pablo Castejón, Ignacio Cuervo, Jesús Villa, Guillermo García-Cueto, Eduardo Díaz-Cuervo, Helena Zardaín, Pilar C Muñiz, José Alonso, Jordi affil: BAP Health Outcomes Research, Oviedo, Spain. pablo@baphealth.com sug: subj: Health Status Indicators Medical Informatics Psychometrics Methods Quality of Life Activities of Daily Living Adult Aged Aged, 80 and Over Computer Systems Cross Sectional Studies Female Human Male Primary Health Care Questionnaires Reproducibility of Results Adult: 19-44 years Aged: 65+ years Aged, 80 & over Female Male ab: Background: Health Related Quality of Life (HRQoL) is a relevant variable in the evaluation of health outcomes. Questionnaires based on Classical Test Theory typically require a large number of items to evaluate HRQoL. Computer Adaptive Testing (CAT) can be used to reduce tests length while maintaining and, in some cases, improving accuracy. This study aimed at validating a CAT based on Item Response Theory (IRT) for evaluation of generic HRQoL: the CAT-Health instrument.Methods: Cross-sectional study of subjects aged over 18 attending Primary Care Centres for any reason. CAT-Health was administered along with the SF-12 Health Survey. Age, gender and a checklist of chronic conditions were also collected. CAT-Health was evaluated considering: 1) feasibility: completion time and test length; 2) content range coverage, Item Exposure Rate (IER) and test precision; and 3) construct validity: differences in the CAT-Health scores according to clinical variables and correlations between both questionnaires.Results: 396 subjects answered CAT-Health and SF-12, 67.2% females, mean age (SD) 48.6 (17.7) years. 36.9% did not report any chronic condition. Median completion time for CAT-Health was 81 seconds (IQ range = 59-118) and it increased with age (p < 0.001). The median number of items administered was 8 (IQ range = 6-10). Neither ceiling nor floor effects were found for the score. None of the items in the pool had an IER of 100% and it was over 5% for 27.1% of the items. Test Information Function (TIF) peaked between levels -1 and 0 of HRQoL. Statistically significant differences were observed in the CAT-Health scores according to the number and type of conditions.Conclusions: Although domain-specific CATs exist for various areas of HRQoL, CAT-Health is one of the first IRT-based CATs designed to evaluate generic HRQoL and it has proven feasible, valid and efficient, when administered to a broad sample of individuals attending primary care settings. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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