Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales

It is important that questionnaires are as short as possible while still capturing the scope of problems relevant in an effective and reliable manner, to minimize the response burden. The purpose of our study was to develop a shortened version of the EORTC QLQ-BR23 for using in breast cancer survivo...

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Autores principales: Xia, Juan, Tang, Zheng, Wu, Peng, Wang, Jiwei, Yu, Jinming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6370820/
https://www.ncbi.nlm.nih.gov/pubmed/30741988
http://dx.doi.org/10.1038/s41598-018-37965-x
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author Xia, Juan
Tang, Zheng
Wu, Peng
Wang, Jiwei
Yu, Jinming
author_facet Xia, Juan
Tang, Zheng
Wu, Peng
Wang, Jiwei
Yu, Jinming
author_sort Xia, Juan
collection PubMed
description It is important that questionnaires are as short as possible while still capturing the scope of problems relevant in an effective and reliable manner, to minimize the response burden. The purpose of our study was to develop a shortened version of the EORTC QLQ-BR23 for using in breast cancer survivors. Our data come from 10794 breast cancer survivors who completed the EORTC QLQ-BR23. Two-thirds of the sample was randomly selected from the original sample for development, and the remaining was used for validation. Item response theory methods were applied to shorten scales. The graded response model of Samejima was used to fit the item responses. The shortened scale was evaluated with the validation set by examining the mean difference, the proportion of respondents correctly predicted, correlation and weighted kappa between the shortened form and the original observed scores. Results reveal that a three-item BRBI, a four-item BRST, a three-item BRBS and a two-item BRAS forecast the scores on the original scales with wonderful consistency and are alike in measurement precision with no loss or only little loss in detecting group differences. Prospective validation on new diagnosed breast cancer patients and with poor QOL is needed.
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spelling pubmed-63708202019-02-15 Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales Xia, Juan Tang, Zheng Wu, Peng Wang, Jiwei Yu, Jinming Sci Rep Article It is important that questionnaires are as short as possible while still capturing the scope of problems relevant in an effective and reliable manner, to minimize the response burden. The purpose of our study was to develop a shortened version of the EORTC QLQ-BR23 for using in breast cancer survivors. Our data come from 10794 breast cancer survivors who completed the EORTC QLQ-BR23. Two-thirds of the sample was randomly selected from the original sample for development, and the remaining was used for validation. Item response theory methods were applied to shorten scales. The graded response model of Samejima was used to fit the item responses. The shortened scale was evaluated with the validation set by examining the mean difference, the proportion of respondents correctly predicted, correlation and weighted kappa between the shortened form and the original observed scores. Results reveal that a three-item BRBI, a four-item BRST, a three-item BRBS and a two-item BRAS forecast the scores on the original scales with wonderful consistency and are alike in measurement precision with no loss or only little loss in detecting group differences. Prospective validation on new diagnosed breast cancer patients and with poor QOL is needed. Nature Publishing Group UK 2019-02-11 /pmc/articles/PMC6370820/ /pubmed/30741988 http://dx.doi.org/10.1038/s41598-018-37965-x Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Xia, Juan
Tang, Zheng
Wu, Peng
Wang, Jiwei
Yu, Jinming
Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title_full Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title_fullStr Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title_full_unstemmed Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title_short Use of item response theory to develop a shortened version of the EORTC QLQ-BR23 scales
title_sort use of item response theory to develop a shortened version of the eortc qlq-br23 scales
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6370820/
https://www.ncbi.nlm.nih.gov/pubmed/30741988
http://dx.doi.org/10.1038/s41598-018-37965-x
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