Exploring the psychometric properties of the Intellectual Disability versions of the Short Warwick–Edinburgh Mental Wellbeing Scale and Kidscreen10, self-reported by adolescents with intellectual disability

J. Davison*, S. Maguire, M. McLaughlin, B. Bunting, V. Simms

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
21 Downloads (Pure)

Abstract

Background: There are no validated self-report measures that can be used to assess health and wellbeing in adolescents with intellectual disability
(ID).
Method: The aim of this study was to explore the psychometric properties of two newly adapted self-report health-related quality of life (HRQoL) and mental wellbeing measures: the Intellectual Disability versions of the Short Warwick–Edinburgh Mental Wellbeing Scale (ID-SWEMWBS) and Kidscreen10 (ID-Kidscreen10). For this, we used data from a sample of 427 adolescents (aged 11–19) with ID recruited from special school settings.
Results: Confirmatory factor analysis (CFA) was conducted to validate the factor structure of both measures. Internal consistency was assessed using Cronbach’s alpha and test–retest reliability was analysed using intra-class correlation coefficients. The internal consistency measured using Cronbach’s alpha was found to be in the range of 0.70–0.78, test–retest reliabilities were expressed using intra-class correlation coefficients that were found to be high for both measures (ID-SWEMWBS, 0.758; ID-Kidscreen10, 0.723), and the CFA supported the unidimensional structure of both measures.
Conclusions: The results of this study indicate that the ID-SWEMWBS and ID-Kidscreen10 have very good psychometric properties and can be used as
self-report measures to assess HRQoL and mental wellbeing in adolescents with ID.
Original languageEnglish
Pages (from-to)415-426
Number of pages12
JournalJournal of intellectual disability research : JIDR
Volume67
Issue number5
Early online date13 Feb 2023
DOIs
Publication statusPublished - May 2023
Externally publishedYes

Keywords

  • adolescent
  • health-related quality of life
  • intellectual disability
  • Mental well-being
  • Psychometric properties
  • self-report

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