Psychometric evaluation of an item bank for computerized adaptive testing of the EORTC QLQ-C30 cognitive functioning dimension in cancer patients.
Background: The European Organisation of Research and Treatment of Cancer (EORTC) Quality of Life Group is developing computerized adaptive testing (CAT) versions of all EORTC Quality of Life Questionnaire (QLQ-C30) scales with the aim to enhance measurement precision. Here we present the results on...
| Publicado en: | Quality of Life Research Vol. 26; no. 11; pp. 2919 - 2930 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Nov2017
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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=125840217&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 125840217 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09629343 GPQ jtl: Quality of Life Research issn: 09629343 maglogo: N pubinfo: dt: Nov2017 vid: 26 iid: 11 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 125840217 125840217 143922636 NLM28707048 125840217 10.1007/s11136-017-1648-8 NLM28707048 125840217 ppf: 2919 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Psychometric evaluation of an item bank for computerized adaptive testing of the EORTC QLQ-C30 cognitive functioning dimension in cancer patients. aug: au: Dirven, Linda Groenvold, Mogens Taphoorn, Martin Conroy, Thierry Tomaszewski, Krzysztof Young, Teresa Petersen, Morten Taphoorn, Martin J B Tomaszewski, Krzysztof A Petersen, Morten Aa affil: Medical Oncology Department , Institut de Cancérologie de Lorraine 6 , Vandoeuvre-Lès-Nancy Cedex France sug: subj: Neoplasms Psychosocial Factors Computers and Computerization Utilization Psychometrics Methods Quality of Life Psychosocial Factors Female Adult Aged Aged, 80 and Over Male Middle Age Questionnaires Human Adult: 19-44 years Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Female Male ab: Background: The European Organisation of Research and Treatment of Cancer (EORTC) Quality of Life Group is developing computerized adaptive testing (CAT) versions of all EORTC Quality of Life Questionnaire (QLQ-C30) scales with the aim to enhance measurement precision. Here we present the results on the field-testing and psychometric evaluation of the item bank for cognitive functioning (CF).Methods: In previous phases (I-III), 44 candidate items were developed measuring CF in cancer patients. In phase IV, these items were psychometrically evaluated in a large sample of international cancer patients. This evaluation included an assessment of dimensionality, fit to the item response theory (IRT) model, differential item functioning (DIF), and measurement properties.Results: A total of 1030 cancer patients completed the 44 candidate items on CF. Of these, 34 items could be included in a unidimensional IRT model, showing an acceptable fit. Although several items showed DIF, these had a negligible impact on CF estimation. Measurement precision of the item bank was much higher than the two original QLQ-C30 CF items alone, across the whole continuum. Moreover, CAT measurement may on average reduce study sample sizes with about 35-40% compared to the original QLQ-C30 CF scale, without loss of power.Conclusion: A CF item bank for CAT measurement consisting of 34 items was established, applicable to various cancer patients across countries. This CAT measurement system will facilitate precise and efficient assessment of HRQOL of cancer patients, without loss of comparability of results. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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