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dc.contributor.authorOlsen, Rolf Vnb_NO
dc.contributor.authorGarratt, Andrew Mnb_NO
dc.contributor.authorIversen, Hilde Hnb_NO
dc.contributor.authorBjertnaes, Oyvind Anb_NO
dc.date.accessioned2011-03-24T12:53:43Znb_NO
dc.date.accessioned2016-02-08T14:18:09Z
dc.date.available2011-03-24T12:53:43Znb_NO
dc.date.available2016-02-08T14:18:09Z
dc.date.issued2010-09-28nb_NO
dc.identifierhttp://dx.doi.org/10.1186/1472-6963-10-282nb_NO
dc.identifier.citationBMC Health Services Research. 2010 Sep 28;10(1):282nb_NO
dc.identifier.issn1472-6963
dc.identifier.urihttp://hdl.handle.net/11250/2377407
dc.description.abstractAbstract Background The Psychiatric Out-Patient Experiences Questionnaire (POPEQ) is an 11-item core measure of psychiatric out-patients experiences of the perceived outcome of the treatment, the quality of interaction with the clinician, and the quality of information provision. The POPEQ was found to have evidence for reliability and validity following the application of classical test theory but has not previously been assessed by Rasch analysis. Methods Two national postal surveys of psychiatric outpatients took place in Norway in 2004 and 2007. The performance of the POPEQ, including item functioning and differential item functioning, was assessed by Rasch analysis. Principal component analysis of item residuals was used to assess the presence of subdimensions. Results 6,677 (43.3%) and 11,085 (35.2%) psychiatric out patients responded to the questionnaire in 2004 and 2007, respectively. All items in the scale were retained after the Rasch analysis. The resulting scale had reasonably good fit to the Rasch model. The items performed the same for the two survey years and there was no differential item functioning relating to patient characteristics. Principal component analysis of the residuals confirmed that the measure to a high degree is unidimensional. However, the data also reflects three potential subscales, each relating to one of the three included aspects of health care. Conclusions The POPEQ had excellent psychometric properties and Rasch analysis further supported the construct validity of the scale by also identifying the three subdimensions originally included as components in the instrument development. The 11-item instrument is recommended in future research on psychiatric out-patient experiences. Future development may lead to the construction of more precise measures of the three subdomains that the POPEQ is based on.nb_NO
dc.language.isoeng
dc.titleRasch analysis of the Psychiatric Out-Patient Experiences Questionnaire (POPEQ)nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.date.updated2011-03-24T12:53:45Znb_NO
dc.rights.holderOlsen et al.; licensee BioMed Central Ltd.nb_NO


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