title: The Patient-Doctor Relationship Questionnaire (PDRQ-9) in Primary Care: A Validity Study.
abstract: This study assessed the validity of the Patient-Doctor Relationship Questionnaire-9 (PDRQ-9) in a primary care sample (N = 180). Convergent validity was assessed through a correlation between the patient-rated PDRQ-9 and the physician-rated Difficult Doctor Patient Relationship Questionnaire-10 (DDPRQ-10). Discriminant validity was assessed through correlations between the PDRQ-9 and patient age, patient- and physician-reported health and psychological distress. To determine if the PDRQ-9 could discriminate between groups, patient PDRQ-9 ratings were compared between patients who were treated by faculty physicians versus those who were treated by residents. An exploratory factor analysis confirmed that the PDRQ-9 was made up of a single factor. The PDRQ-9 scale was internally consistent (α = .96) and significantly and negatively correlated with the DDPRQ-10 (r = -.22, p = .003) and was not significantly correlated with patient age, health, or psychological distress. PDRQ-9 ratings were statistically greater in patients who were treated by faculty physicians than those who were treated by residents (p = .01). This study provides additional support for the reliability and validity of the PDRQ-9 as a measure of the doctor-patient relationship in a primary care sample.
authors.affiliation: Department of Family Medicine & Public Health Sciences, Wayne State University School of Medicine, Detroit, MI, USA, jporcer@med.wayne.edu.
authors.forename: John H
authors.initials: JH
authors.lastname: Porcerelli
authors.forename: William
authors.initials: W
authors.lastname: Murdoch
authors.forename: Pierre
authors.initials: P
authors.lastname: Morris
authors.forename: Shannon
authors.initials: S
authors.lastname: Fowler
mesh_terms: D000328:Adult; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D017060:Patient Satisfaction / Q000706:statistics & numerical data*; D010817:Physician-Patient Relations; D011320:Primary Health Care / Q000379:methods* / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D013383:Suburban Population / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires
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