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Psychometric properties of the Japanese version of the EQ-5D-Y by self-report and proxy-report: reliability and construct validity.

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Title: Psychometric properties of the Japanese version of the EQ-5D-Y by self-report and proxy-report: reliability and construct validity.
Authors: Shiroiwa, T. (AUTHOR), Fukuda, T. (AUTHOR), Shimozuma, K. (AUTHOR)
Source: Quality of Life Research. Nov2019, Vol. 28 Issue 11, p3093-3105. 13p. 11 Charts, 1 Graph.
Subjects: Test validity, Test reliability, Self-evaluation, Rank correlation (Statistics), Mental health, Quality of life, Guardian & ward, Parents, Psychometrics, Questionnaires, Research evaluation, Research funding, Translations
Geographic Terms: Japan
Abstract: Purpose: This study aimed to assess psychometric properties of the Japanese version of the EQ-5D-Y (3 levels) with a focus on feasibility, reliability, and construct validity.Methods: Respondents were recruited from the general populations of three cities in Japan. First, children and adolescents responded to the EQ-5D-Y and PedsQL by self-report. Parents were also asked to evaluate the health states of their children/adolescents using proxy versions of these questionnaires. Next, the EQ-5D-Y was mailed to their residence approximately 2 weeks later, and both children/adolescents and their parents responded to the questionnaire. Reliability was confirmed by self-report test-retest methods and a comparison of self-report responses with proxy responses. Spearman's correlation coefficients were calculated between responses to the EQ-5D-Y and both responses to and scores of the PedsQL in order to assess construct validity.Results: A total of 654 children/adolescents from aged 8 to 15 (median age: 11) responded to the questionnaires at both the first- and second-stage surveys. Test-retest agreement was sufficiently high and was influenced by age. Proxy test-retest results revealed that parents' responses were more reliable compared to the self-report results. Some correlations (|r| > 0.3) between items of the EQ-5D-Y and PedsQL were found. Meanwhile, no correlations were found between proxy responses to the EQ-5D-Y and self-report responses to the PedsQL.Conclusions: The EQ-5D-Y demonstrates reliability and validity among children/adolescents and their parents in Japan. Construct validity of the EQ-5D-Y by self-report was confirmed through comparisons with the PedsQL. Proxy responses to the EQ-5D-Y were more reliable compared to the self-report results, but construct validity was not confirmed in the proxy version. [ABSTRACT FROM AUTHOR]
Copyright of Quality of Life Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Psychometric properties of the Japanese version of the EQ-5D-Y by self-report and proxy-report: reliability and construct validity.
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  Data: <searchLink fieldCode="AR" term="%22Shiroiwa%2C+T%2E%22">Shiroiwa, T.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fukuda%2C+T%2E%22">Fukuda, T.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shimozuma%2C+K%2E%22">Shimozuma, K.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Quality+of+Life+Research%22">Quality of Life Research</searchLink>. Nov2019, Vol. 28 Issue 11, p3093-3105. 13p. 11 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Test+validity%22">Test validity</searchLink><br /><searchLink fieldCode="DE" term="%22Test+reliability%22">Test reliability</searchLink><br /><searchLink fieldCode="DE" term="%22Self-evaluation%22">Self-evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Rank+correlation+%28Statistics%29%22">Rank correlation (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22Mental+health%22">Mental health</searchLink><br /><searchLink fieldCode="DE" term="%22Quality+of+life%22">Quality of life</searchLink><br /><searchLink fieldCode="DE" term="%22Guardian+%26+ward%22">Guardian & ward</searchLink><br /><searchLink fieldCode="DE" term="%22Parents%22">Parents</searchLink><br /><searchLink fieldCode="DE" term="%22Psychometrics%22">Psychometrics</searchLink><br /><searchLink fieldCode="DE" term="%22Questionnaires%22">Questionnaires</searchLink><br /><searchLink fieldCode="DE" term="%22Research+evaluation%22">Research evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Research+funding%22">Research funding</searchLink><br /><searchLink fieldCode="DE" term="%22Translations%22">Translations</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Japan%22">Japan</searchLink>
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  Data: <bold>Purpose: </bold>This study aimed to assess psychometric properties of the Japanese version of the EQ-5D-Y (3 levels) with a focus on feasibility, reliability, and construct validity.<bold>Methods: </bold>Respondents were recruited from the general populations of three cities in Japan. First, children and adolescents responded to the EQ-5D-Y and PedsQL by self-report. Parents were also asked to evaluate the health states of their children/adolescents using proxy versions of these questionnaires. Next, the EQ-5D-Y was mailed to their residence approximately 2 weeks later, and both children/adolescents and their parents responded to the questionnaire. Reliability was confirmed by self-report test-retest methods and a comparison of self-report responses with proxy responses. Spearman's correlation coefficients were calculated between responses to the EQ-5D-Y and both responses to and scores of the PedsQL in order to assess construct validity.<bold>Results: </bold>A total of 654 children/adolescents from aged 8 to 15 (median age: 11) responded to the questionnaires at both the first- and second-stage surveys. Test-retest agreement was sufficiently high and was influenced by age. Proxy test-retest results revealed that parents' responses were more reliable compared to the self-report results. Some correlations (|r| > 0.3) between items of the EQ-5D-Y and PedsQL were found. Meanwhile, no correlations were found between proxy responses to the EQ-5D-Y and self-report responses to the PedsQL.<bold>Conclusions: </bold>The EQ-5D-Y demonstrates reliability and validity among children/adolescents and their parents in Japan. Construct validity of the EQ-5D-Y by self-report was confirmed through comparisons with the PedsQL. Proxy responses to the EQ-5D-Y were more reliable compared to the self-report results, but construct validity was not confirmed in the proxy version. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Quality of Life Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11136-019-02238-1
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        Text: English
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      – SubjectFull: Test reliability
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      – SubjectFull: Japan
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      – TitleFull: Psychometric properties of the Japanese version of the EQ-5D-Y by self-report and proxy-report: reliability and construct validity.
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              Text: Nov2019
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