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Psychometric evaluation of the Questionnaire about the Process of Recovery (QPR)

Williams, Julie; Leamy, Mary; Pesola, Francesca; Bird, Victoria; Le Boutillier, Clair; Slade, Mike

Authors

Julie Williams

Mary Leamy

Francesca Pesola

Victoria Bird

Clair Le Boutillier

MIKE SLADE M.SLADE@NOTTINGHAM.AC.UK
Professor in Mental Health Recovery and Social Inclusion



Abstract

Background: Supporting recovery is the aim of national mental health policy in many countries, including England. There is a need for standardised measures of recovery, to assess policy implementation and inform clinical practice. Only one measure of recovery has been developed in England: the Questionnaire about the Process of Recovery (QPR) which measures recovery from the perspective of adult mental health service users with a psychosis diagnosis.
Aims: To independently evaluate the psychometric properties of the 15-item and 22-item versions of QPR.
Method: Two samples were used: Dataset 1 (n=88) involved assessment of QPR at baseline, two weeks and three months. Dataset 2 (n=399; ISRCTN02507940) involved assessment of QPR at baseline and one year.
Results: For the 15-item version, internal consistency was 0.89, convergent validity was 0.73, test-retest reliability was 0.74 and sensitivity to change was 0.40. Confirmatory factor analysis showed the 15-item version offered a good fit. For the 22 item version comprising two sub-scales, the Interpersonal sub-scale was found to under-perform and the Intrapersonal sub-scale overlaps substantially with the 15 item version. Conclusions: Both the 15-item and the Intrapersonal sub-scale of the 22-item versions of the QPR demonstrated satisfactory psychometric properties. The 15-item version is slightly more robust and also less burdensome, so it can be recommended for use in research and clinical practice.
Declaration of interest: None.

Journal Article Type Article
Publication Date Dec 1, 2015
Journal British Journal of Psychiatry
Print ISSN 0007-1250
Electronic ISSN 1472-1465
Publisher Cambridge University Press (CUP)
Peer Reviewed Peer Reviewed
Volume 207
Issue 6
APA6 Citation Williams, J., Leamy, M., Pesola, F., Bird, V., Le Boutillier, C., & Slade, M. (2015). Psychometric evaluation of the Questionnaire about the Process of Recovery (QPR). British Journal of Psychiatry, 207(6), doi:10.1192/bjp.bp.114.161695
DOI https://doi.org/10.1192/bjp.bp.114.161695
Publisher URL http://bjp.rcpsych.org/content/207/6/551
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is an author-produced electronic version of an article accepted for publication in the British Journal of Psychiatry. The definitive publisher-authenticated version is available online at http://bjp.rcpsych.org/content/207/6/551

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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