The Patient–Doctor Relationship Questionnaire (PDRQ-9) in Primary Care: A Validity Study
- 829 Downloads
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.
KeywordsDoctor–patient relationship Patient–doctor relationship questionnaire PDRQ-9 DDPRQ-10 Convergent validity Discriminant validity
The authors with to thank the Department of Family Medicine & Public Health Sciences for their support of this research and to the Family Medicine Center staff for their assistance in carrying out this project.
Conflict of Interest
John Porcerelli, William Murdoch, Pierre Morris, and Shannon Fowler declare that they have no conflict of interest.
Human and Animal Rights and Informed Consent
All procedures followed were in accordance with the ethical standards of the Human Investigations Committee of the IRB at Wayne State University and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.
- American Academy of Family Physicians, American Academy of Pediatrics, American College of Physicians, American Osteopathic Association. (2007). Joint principles of the patient-centered medical home. www.medicalhomeinfo.org/Joint%20Statement.pdf. 24 Oct 2007.
- Didden, D. G., Philbrick, J. T., & Schorling, J. B. (2001/2002). Anxiety and depression in an internal medicine resident continuity clinic: Difficult diagnoses. International Journal of Psychiatry in Medicine, 31, 155–167.Google Scholar
- Hanel, G., Henningson, P., Herzog, W., Sauer, N., Schaefert, R., Szecsenyid, J., Löwe, B. (2009). Depression, anxiety, and somatoform disorders: Vague or distinct categories in primary care? Results from a large cross-sectional study. Journal of Psychosomatic Research, 67, 189–197.CrossRefPubMedGoogle Scholar
- Löwe, B., Wahl, I., Rose, M., Spitzer, C., Glaesmer, H., Wingenfeld, K., … Brahler, E. (2010). A 4-item measure of depression and anxiety: Validation and standardization of the patient health questionnaire-4 (PHQ-4) in the general population. Journal of Affective Disorders, 122, 86–95.CrossRefPubMedGoogle Scholar
- Stewart, A. L., Hays, R. D., & Ware, J. E., Jr. (1988). The MOS short-form general health survey: Reliability and validity in a patient population. Medical Care, 26, 724–735.Google Scholar