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01-05-2011 | Uitgave 4/2011

A cross-sectional validation study of EQ-5D among the Malaysian adult population

Tijdschrift:: Quality of Life Research > Uitgave 4/2011

Auteurs:: Asrul Akmal Shafie, Mohamed Azmi Hassali, Siow Yen Liau

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Abstract

Purpose

The objective of this study was to assess the construct validity of the EQ-5D instrument among the Malaysian population.

Methods

This was a cross-sectional study conducted among Malaysian adults in three northern states of Malaysia. A pre-developed questionnaire consisting of both the EQ-5D and SF-12 items was used for data collection. Concurrent, convergent, and known group validity of EQ-5D were assessed against SF-12 and several known relationships with participants’ demographic and illness characteristics.

Results

A total of 596 Malaysians participated in the study. The mean EQ-5D score was 0.93 (SD = 0.13), while the mean physical component score (PCS-12) and mental component score (MCS-12) scores were 48.9 (SD = 7.4) and 49.1 (SD = 8.0), respectively. Participants with a current medical problem had lower PCS-12 and MCS-12 scores and reported more problems with all of the EQ-5D dimensions; they also had lower EQ-5D and EQ-VAS scores (P < 0.05). Convergent validity was supported by a moderately positive correlation between EQ-5D and EQ-VAS with MCS-12 and PCS-12 scores; moreover, the stronger effect sizes between PCS-12 and the physical dimensions of EQ-5D as well as between MCS-12 with anxiety/depression scores further supported the convergent validity of EQ-5D. Responses to the EQ-5D dimensions only supported two of the four known group validity hypotheses of higher quality of life among individuals who are better educated and no medical problem. No association was found between income and gender with EQ-5D score.

Conclusion

This study has demonstrated acceptable construct validity of the EQ-5D among the Malaysian population.

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Titel: A cross-sectional validation study of EQ-5D among the Malaysian adult population
Auteurs:: Asrul Akmal Shafie
Mohamed Azmi Hassali
Siow Yen Liau
Publicatiedatum: 01-05-2011
DOI: https://doi.org/10.1007/s11136-010-9774-6
Uitgeverij: Springer Netherlands
Tijdschrift: Quality of Life Research An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation - An Official Journal of the International Society of Quality of Life Research
Uitgave 4/2011
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649

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Abstract

Purpose

Methods

Results

Conclusion

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