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01-06-2014 | Original Article

Measurement Equivalence of the KINDL Questionnaire Across Child Self-reports and Parent Proxy-reports: A Comparison Between Item Response Theory and Ordinal Logistic Regression

Auteurs: Peyman Jafari, Zahra Sharafi, Zahra Bagheri, Sara Shalileh

Gepubliceerd in: Child Psychiatry & Human Development | Uitgave 3/2014

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Abstract

Measurement equivalence is a necessary assumption for meaningful comparison of pediatric quality of life rated by children and parents. In this study, differential item functioning (DIF) analysis is used to examine whether children and their parents respond consistently to the items in the KINDer Lebensqualitätsfragebogen (KINDL; in German, Children Quality of Life Questionnaire). Two DIF detection methods, graded response model (GRM) and ordinal logistic regression (OLR), were applied for comparability. The KINDL was completed by 1,086 school children and 1,061 of their parents. While the GRM revealed that 12 out of the 24 items were flagged with DIF, the OLR identified 14 out of the 24 items with DIF. Seven items with DIF and five items without DIF were common across the two methods, yielding a total agreement rate of 50 %. This study revealed that parent proxy-reports cannot be used as a substitute for a child’s ratings in the KINDL.
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Metagegevens
Titel
Measurement Equivalence of the KINDL Questionnaire Across Child Self-reports and Parent Proxy-reports: A Comparison Between Item Response Theory and Ordinal Logistic Regression
Auteurs
Peyman Jafari
Zahra Sharafi
Zahra Bagheri
Sara Shalileh
Publicatiedatum
01-06-2014
Uitgeverij
Springer US
Gepubliceerd in
Child Psychiatry & Human Development / Uitgave 3/2014
Print ISSN: 0009-398X
Elektronisch ISSN: 1573-3327
DOI
https://doi.org/10.1007/s10578-013-0407-5

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