Original InvestigationDialysis TherapyValidation of 2 Depression Screening Tools in Dialysis Patients
Section snippets
Study Sample
Patients were recruited from 5 outpatient hemodialysis and peritoneal dialysis units in the Portland, OR, metropolitan area. Both public and private dialysis units were included. To be eligible, patients were at least 18 years old and had started dialysis therapy more than 90 days before enrollment. Patients were excluded if they did not speak English, had a score of 17 or less on the Folstein Mini-Mental State Examination, had medical record documentation of a psychiatric diagnosis other than
Results
From July 2003 until May 2004, a total of 115 patients from 3 nephrology practices were considered. Twenty-three patients were excluded because they did not meet eligibility criteria. Another 28 patients refused enrollment. Two patients died before data collection could be completed. Sixty-two patients completed the study. Mean age was 63 ± 14.9 (SD) years, with 42 men and 20 women. There was a statistically significant difference in number of men in our cohort versus the US Renal Data System
Discussion
Our main finding is that 2 screening tools, the BDI and the PHQ, show validity in comparison to a gold-standard measure for depression in the dialysis population. They performed best for a depressive diagnosis at values of 16 or greater for the BDI and 10 or greater for the PHQ-9. Only half these depressed patients had been previously identified with a mood disorder clinically, supporting the usefulness of such screening tools.
The PHQ-9 uses an optimal cutoff value of 10 or greater for a
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Supported in part by a grant from the Portland Veterans’ Administration Research Foundation.
Originally published online as doi:10.1053/j.ajkd.2005.08.006 on September 29, 2005.