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Cross-Cultural Adaptation, Validity and Reliability of the Escala Pessoal de Resultados

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  • Cristina Simões
  • Sofia Santos

Abstract

The present article aims to examine the validity and reliability of the Portuguese version of Personal Outcomes Scale the Escala Pessoal de Resultados (EPR). This scale represents an instrument to measure the quality of life (QOL) in people with intellectual disabilities (ID). The study was initiated with the application of international guidelines in cross-cultural adaptation, culminating with an evaluation of 10 experts for the quantitative evidence of the content validity. All EPR’s items were considered relevant and there was a moderated agreement (k > .40) among the experts in the calculation of Cohen’s kappa, finding some coefficients’ that are considered as an excellent agreement (k > .75). In test field, our sample comprised 335 adults with ID on level of intermittent and limited support needs, even as the respective proxies. The scale showed an excellent internal consistency (α = .94). EPR’s construct validity indexes are also reported and discussed. The study provides EPR as a valid instrument for assess the QOL in ID field, and the scale seems to be useful for improvement of Portuguese rehabilitation practices and services. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Cristina Simões & Sofia Santos, 2014. "Cross-Cultural Adaptation, Validity and Reliability of the Escala Pessoal de Resultados," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 119(2), pages 1065-1077, November.
    • Handle: RePEc:spr:soinre:v:119:y:2014:i:2:p:1065-1077
    DOI: 10.1007/s11205-013-0515-4
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    References listed on IDEAS

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    1. Claudia Claes & Geert Hove & Jos Loon & Stijn Vandevelde & Robert Schalock, 2010. "Quality of Life Measurement in the Field of Intellectual Disabilities: Eight Principles for Assessing Quality of Life-Related Personal Outcomes," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 98(1), pages 61-72, August.
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    Cited by:

    1. Cristina Simões & Sofia Santos, 2017. "The Impact of Personal and Environmental Characteristics on Quality of Life of People with Intellectual Disability," Applied Research in Quality of Life, Springer;International Society for Quality-of-Life Studies, vol. 12(2), pages 389-408, June.
    2. Nam Xuan Vo & Trung Quang Vo & Somtip Watanapongvanich & Nopphol Witvorapong, 2019. "Measurement and Determinants of Quality of Life of Older Adults in Ho Chi Minh City, Vietnam," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 142(3), pages 1285-1303, April.

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