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      A Tool for Assessing the Quality of Life of Adolescents in Youth Care: Psychometric Properties of the QOLYSS Translated title: Una herramienta de evaluación de la calidad de vida de los adolescentes que reciben asistencia juvenil: propiedades psicométricas de la escala QOLYSS

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          ABSTRACT

          Quality of life (QOL) has gained increased interest as a critical pathway to better understanding the lives and circumstances of children and adolescents in both the general population and among specific populations. Yet, QOL assessment among youngsters in youth care services remains a highly under-researched topic. This study examines the suitability and psychometric properties of a new QOL self-report scale for adolescents between 12 and 18 years old in youth care: the Quality of Life in Youth Services Scale (QOLYSS). The provisional version of the QOLYSS was pre-tested in a sample of 28 adolescents in youth care to examine its applicability and feasibility. Next, a comprehensive evaluation of the psychometric properties of the field-test version was conducted in a sample of 271 adolescents in youth care in Flanders, Belgium ( M = 15.43, SD = 1.73). Classical item and factor analyses were carried out per subscale, (test-retest) reliability and item-discriminant validity of the subscales were examined, convergent validity was explored, and confirmatory factor analysis was used to examine the goodness-of-fit of different measurement models. Reliability measures of the scale are satisfactory, results are indicative of convergent validity, and confirmatory factor analysis provides evidence for the eight correlated factors model. Future lines of research concerning the ongoing development and application of the QOLYSS are discussed.

          RESUMEN

          La calidad de vida (CV) ha despertado un mayor interés como un modo esencial de comprender mejor la vida y circunstancias de niños y adolescentes tanto en población general como específica. No obstante, la evaluación de la CV de los jóvenes en servicios de atención juvenil sigue siendo un tema poco investigado. El presente studio analiza la adecuación y las propiedades psicométricas de una nueva escala de autoinforme de la CV para adolescentes entre los 12 y 18 años de edad en servicios para jóvenes: la Escala de Calidad de Vida en los Servicios Juveniles (QOLYSS, según sus siglas en inglés). Se realizó una prueba piloto con la versión provisional de la QOLYSS con una muestra de 28 adolescentes en servicios de atención a jóvenes para ver en qué medida era aplicable y factible. Luego se llevó a cabo una evaluación general de las propiedades psicométricas de la versión de campo de la prueba con una muestra de 271 adolescentes en servicios de atención a jóvenes en Flandes, Bélgica ( M = 15.43, SD = 1.73). Se llevó a cabo un análisis clásico de ítems y análisis factoriales por subescalas, se examinó la fiabilidad (test-retest) y la validez discriminante de los ítems por subescalas, se exploró la validez convergente y se utilizó análisis factorial confirmatorio para analizar el ajuste de diferentes modelos de medida. Las medidas de fiabilidad de la escala son satisfactorias y los resultados son indicativos de validez convergente, a la vez que el análisis factorial confirmatorio muestra un modelo de ocho factores correlacionados. Se discute sobre las futuras líneas de investigación en relación con el desarrollo actual y aplicación de la QOLYSS.

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          Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives

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            Quality criteria were proposed for measurement properties of health status questionnaires.

            Recently, an increasing number of systematic reviews have been published in which the measurement properties of health status questionnaires are compared. For a meaningful comparison, quality criteria for measurement properties are needed. Our aim was to develop quality criteria for design, methods, and outcomes of studies on the development and evaluation of health status questionnaires. Quality criteria for content validity, internal consistency, criterion validity, construct validity, reproducibility, longitudinal validity, responsiveness, floor and ceiling effects, and interpretability were derived from existing guidelines and consensus within our research group. For each measurement property a criterion was defined for a positive, negative, or indeterminate rating, depending on the design, methods, and outcomes of the validation study. Our criteria make a substantial contribution toward defining explicit quality criteria for measurement properties of health status questionnaires. Our criteria can be used in systematic reviews of health status questionnaires, to detect shortcomings and gaps in knowledge of measurement properties, and to design validation studies. The future challenge will be to refine and complete the criteria and to reach broad consensus, especially on quality criteria for good measurement properties.
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              An index of factorial simplicity

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                Author and article information

                Journal
                Interv Psicosoc
                Interv Psicosoc
                inter
                Psychosocial Intervention
                Colegio Oficial de la Psicología de Madrid
                1132-0559
                2173-4712
                2 January 2023
                January 2023
                : 32
                : 1
                : 21-31
                Affiliations
                [a ] orgnameGhent University orgdiv1Department of Special Needs Education Belgium originalGhent University, Department of Special Needs Education, Belgium;
                [b ] orgnameHOGENT University of Applied Sciences and Arts orgdiv1Social-Educational Care Work Ghent Belgium originalHOGENT University of Applied Sciences and Arts, Social-Educational Care Work, EQUALITY//Research Collective, Ghent, Belgium
                [c ] orgnameUniversity of Oviedo orgdiv1Department of Psychology Spain originalUniversity of Oviedo, Department of Psychology, Spain;
                [d ] orgnameGhent University orgdiv1Faculty of Economics and Business Administration Belgium originalGhent University, Faculty of Economics and Business Administration, Belgium;
                [e ] orgnameStatistics Flanders Brussels Belgium originalStatistics Flanders, Brussels, Belgium;
                [f ] orgnameGhent University orgdiv1Faculty of Psychology and Educational Sciences orgdiv2Research Support Office Belgium originalGhent University, Faculty of Psychology and Educational Sciences, Research Support Office, Belgium
                Author notes
                Correspondence: chris.swerts@ 123456ugent.be (C. Swerts).

                Conflict of Interest: The authors of this article declare no conflict of interest.

                Article
                00003
                10.5093/pi2022a17
                10268548
                0e9c485b-4680-458f-947b-70f19fc4bcb6
                Copyright © 2023, Colegio Oficial de la Psicología de Madrid

                This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial No Derivative License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited and the work is not changed in any way.

                History
                : 25 April 2022
                : 05 September 2022
                Page count
                Figures: 0, Tables: 7, Equations: 0, References: 92, Pages: 11
                Funding
                Funded by: Flemish Fund
                Award ID: 1900722N
                Funding: C.S. is the recipient of a Special PhD Fellowship from the Flemish Fund for Scientific Research (FWO-Vlaanderen), project number: 1900722N.
                Categories
                Research-Article

                quality of life,scale,psychometrics,youth care,adolescents,calidad de vida,escala,picometría,atención a la juventud,adolescentes

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