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Quality of life in schizophrenia: development, reliability and internal consistency of the Lancashire Quality of Life Profile – European Version: EPSILON Study 8

  • Luis Gaite (a1), José Luis Vázquez-Barquero (a1), Andrés Arriaga Arrizabalaga (a1), Aart H. Schene (a2), Birgitte Welcher (a3), Graham Thornicroft (a4), Mirella Ruggeri (a5), Elena Vázquez-Bourgon (a1), Modesto Pérez Retuerto (a1), Morven Leese (a4) and EPSILON Study Group...

Abstract

Background

This paper, part of the European Psychiatric Services: Inputs Linked to Outcome Domains and Needs (EPSILON) Study, reports the development, reliability and internal consistency of the Lancashire Quality of Life Profile – European Version (LQoLP–EU) in a representative sample of people with schizophrenia from five European sites.

Method

The LQoLP–EU was administered to a total sample of 404 patients to check its internal consistency, and a sub-sample of 294 patients was interviewed a second time within 7–15 days to verify its test–retest reliability.

Results

Internal consistency of the total domains, perceived QoL scale (Life Satisfaction Scale, LSS) was good at 0.87. Of the nine subjective QoL domains Work and Leisure showed the lowest internal consistency (0.30 and 0.56 respectively), the values of the remaining sub-scales ranging between 0.62 and 0.88. The pooled ICC score for LSS was 0.82, and for the nine subjective QoL domain sub-scales it ranged from 0.61 (Safety) to 0.75 (Living Situation). There were significant differences between the sites in α and ICCs for sub-scales, but not for the LSS.

Conclusion

The LQoLP-EU has good internal consistency and reliability in the five European centres.

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Copyright

Corresponding author

Professor José Luis Vázquez-Barquero, Professor of Psychiatry, Unidad de Investigación en Psiquiatria Clinica y Social, Hospital Universitario ‘Marqués de Valdecilla’, Universidad de Cantabria, Avda. Valdecilla s/n, 39008 Santander, Spain. Tel: +34 942 203 446 or 202 545; fax: +34 942 202 655 or 203 447

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Declaration of interest

No conflict of interest. Funding detailed in Acknowledgements.

Footnotes

References

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Quality of life in schizophrenia: development, reliability and internal consistency of the Lancashire Quality of Life Profile – European Version: EPSILON Study 8

  • Luis Gaite (a1), José Luis Vázquez-Barquero (a1), Andrés Arriaga Arrizabalaga (a1), Aart H. Schene (a2), Birgitte Welcher (a3), Graham Thornicroft (a4), Mirella Ruggeri (a5), Elena Vázquez-Bourgon (a1), Modesto Pérez Retuerto (a1), Morven Leese (a4) and EPSILON Study Group...
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