How does the EQ-5D perform when measuring quality of life in dementia against two other dementia-specific outcome measures?

  1. Aguirre, Elisa 1
  2. Kang, Sujin 1
  3. Hoare, Zoe 1
  4. Edwards, Rhiannon Tudor 1
  5. Orrell, Martin 1
  1. 1 University College London
    info

    University College London

    Londres, Reino Unido

    ROR https://ror.org/02jx3x895

Revista:
Quality of Life Research

ISSN: 0962-9343,  1573-2649

Año de publicación: 2015

Volumen: 25

Número: 1

Páginas: 45-49

Tipo: Artículo

DOI: 10.1007/S11136-015-1065-9 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Quality of Life Research

Resumen

PurposeThis study aimed to assess and compare the psychometric performance of the EQ-5D in relation to other dementia-specific measures, the QoL-AD and DEMQoL, within a psychosocial intervention study.MethodsTwo hundred and seventy-two people with dementia completed the EQ-5D, DEMQoL and QoL-AD. Convergent and discriminant validity of the measures were assessed, and inter-rater reliability was tested by comparing the self-reported and proxy scores of the measures. Internal consistency was tested using Cronbach’s alpha.ResultsResults satisfy convergent validity amongst the three outcome measures. EQ-5D, DEMQoL and QoL-AD total scores were shown to be significantly correlated with each other (p < 0.001) in both participants with dementia and proxy reports. Results also satisfied discriminant validity for participant EQ-5D, DEMQoL and QoL-AD total scores. In relation to reliability between self and proxy scores, the EQ-5D showed higher reliability scores between participant and proxy total scores for mild and moderate level of cognitive impairment and performed better than the dementia-specific measures. Reliability assessed through Cronbach’s alpha was satisfactory, indicating adequate internal consistency of all three measures.ConclusionsThe results suggest that the EQ-5D might have advantages over other dementia-specific measures, and it could be used routinely and as a stand-alone measure of quality of life in dementia research.

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