標題: Satisfaction Ratings of QOLPAV: Psychometric Properties Based on the Graded Response Model
作者: Chen, Ssu-Kuang
Hwang, Fang-Ming
Lin, Sunny S. J.
教育研究所
Institute of Education
關鍵字: Quality of life;The graded response model;Pyschometric properties;Satisfaction ratings;Importance weights
公開日期: 1-一月-2013
摘要: A scale measuring quality of life (QOL) is important in adolescent research. Using the graded response model (GRM), this study evaluates the psychometric properties of the satisfaction ratings of the Quality of Life Profile Adolescent Version (QOLPAV). Data for 1,392 adolescents were used to check IRT assumptions such as unidimensionality and local item dependence (LID). The goodness of fit of the GRM to the data and the item characteristic curves were evaluated. The reliability and validity analyses included item/test information, Cronbach's alpha, and convergent and discriminant validity. Differential item functioning (DIF) procedures were also performed to detect item bias. The results provide evidence that the items sufficiently measured one single dimension. Few pairs of questions were flagged as LID due to content or wording similarity. Five items did not fit the GRM, and 4 were low in item discrimination. The findings also suggest that the assessment had appropriate reliability and validity. The DIF impact on the assessment score was considered minor. Because QOLPAV includes a respondent's perceived importance of various life aspects, a short form that only considers important life aspects in the overall QOL estimation for each respondent becomes feasible within the framework of IRT. Future studies focusing on the development of a QOL overall index using the items from QOLPAV are recommended.
URI: http://dx.doi.org/10.1007/s11205-011-9935-1
http://hdl.handle.net/11536/21112
ISSN: 0303-8300
DOI: 10.1007/s11205-011-9935-1
期刊: SOCIAL INDICATORS RESEARCH
Volume: 110
Issue: 1
起始頁: 367
結束頁: 383
顯示於類別:期刊論文


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  1. 000314336300022.pdf