Item and response-category functioning of the Persian version of the KIDSCREEN-27: Rasch partial credit model

Health and Quality of Life Outcomes

Short Report

Peyman Jafari¹  Mozhgan Safe¹  Zahra Bagheri² 

[1] Department of Biostatistics, Shiraz University of Medical Sciences, Shiraz, Iran;Department of Biostatistics, Shiraz University of Medical Sciences, Shiraz, Iran;Fasa University of Medical Sciences, Fasa, Iran;

关键词: Quality of life;    KIDSCREEN-27;    Iran;    Rasch model;   

DOI  :  10.1186/1477-7525-10-127

 received in 2012-03-20, accepted in 2012-10-15,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundThe purpose of the study was to determine whether the Persian version of the KIDSCREEN-27 has the optimal number of response category to measure health-related quality of life (HRQoL) in children and adolescents. Moreover, we aimed to determine if all the items contributed adequately to their own domain.FindingsThe Persian version of the KIDSCREEN-27 was completed by 1083 school children and 1070 of their parents. The Rasch partial credit model (PCM) was used to investigate item statistics and ordering of response categories. The PCM showed that no item was misfitting. The PCM also revealed that, successive response categories for all items were located in the expected order except for category 1 in self- and proxy-reports.ConclusionsAlthough Rasch analysis confirms that all the items belong to their own underlying construct, response categories should be reorganized and evaluated in further studies, especially in children with chronic conditions.

【 授权许可】

Unknown   
© Jafari et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.