The diagnostic utility of Self-Reporting Questionnaire (SRQ) as a screening tool for major depression in hemodialysis patients.
Author: Alsuwaida A, Alwahhabi F.
Source:
Saudi Journal of Kidney Diseases and Transplantation, 17(4), 503.
There is overwhelming evidence that individuals with Major Depressive Disorder
(MDD) are being seriously under diagnosed and under treated. The Self-Reporting
Questionnaire (SRQ) is a good screening instrument for the detection of
psychiatric disorders. However, the clinical significance of SRQ as a screening
test for MDD in patients on hemodialysis (HD) has yet to be elucidated. The
purpose of this study was to evaluate the diagnostic utility of the SRQ in
detecting MDD in a cohort of patients with end-stage renal disease (ESRD) on
maintenance HD. Twenty-six patients on maintenance HD were randomly recruited and
were asked to complete the SRQ. The participants were, in addition, interviewed
by a psychiatrist, who had been blinded to the SRQ score. We examined the ability
of SRQ to detect patients who were diagnosed to have MDD based on psychiatric
assessment. Among the 26 patients assessed, four patients were diagnosed to have
MDD based on current diagnostic criteriLogistic regression analysis showed
that SRQ could predict patients with MDD with adjusted odds ratio of 1.9 (CI,
1.06- 3.42). Being a female was the most important variable for having a high SRQ
(F=16.9, P=0.0004). The limitations of this study include a relatively small
sample size and a high rate of somatic symptoms reported in the non-depressed
population that limited the positive predictive value of the SRQ. Thus, although
the SRQ has a high sensitivity, the positive predictive value of the SRQ is poor
at low cut offs. In conclusion, our study suggests that an ideal screening tool
in patients on HD should have minimal emphasis on the somatic symptoms of MDD.
Until such a tool is available, clinical assessment remains the best screening
tool for MDD.