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Validation of the Patient-Doctor-Relationship Questionnaire (PDRQ-9) in a Representative Cross- Sectional German Population Survey

The patient-doctor relationship (PDR) as perceived by the patient is an important concept in primary care and
psychotherapy. The PDR Questionnaire (PDRQ-9) provides a brief measure of the therapeutic aspects of the PDR in primary
care. We assessed the internal and external validity of the German version of the PDRQ-9 in a representative crosssectional
German population survey that included 2,275 persons aged$14 years who reported consulting with a primary
care physician (PCP). The acceptance of the German version of this questionnaire was good. Confirmatory factor analysis
demonstrated that the PRDQ-9 was unidimensional. The internal reliability (Cronbach’s a) of the total score was .95. The
corrected item-total correlations were$.94. The mean satisfaction index of persons with a probable depressive disorder was
lower than that of persons without a probable depressive disorder, indicating good discriminative concurrent criterion
validity. The correlation coefficient between satisfaction with PDR and satisfaction with pain therapy was r = .51 in 489
persons who reported chronic pain, indicating good convergent validity. Despite the limitation of low variance in the PDRQ-
9 total scores, the results indicate that the German version of the PDRQ-9 is a brief questionnaire with good psychometric
properties to assess German patients’ perceived therapeutic alliance with PCPs in public health research.

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:15-qucosa-142630
Date07 May 2014
CreatorsZenger, Markus, Häuser, Winfried
ContributorsUniversität Leipzig, Department of Medical Psychology and Medical Sociology, Public Library of Science,, Universität Leipzig, Department of Medical Psychology and Medical Sociology
PublisherUniversitätsbibliothek Leipzig
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typedoc-type:article
Formatapplication/pdf
SourcePLoS ONE, March 17, 2014 doi: 10.1371/journal.pone.0091964

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