MIDAS Project Publication Abstracts
Zimmerman, M., Sheeran, T., & Young, D. The Diagnostic
Inventory for Depression: A self-report scale to diagnose DSM-IV
Major Depressive Disorder. Journal of Clinical Psychology,
2004, 60, 87-110.
In this report from the Rhode Island Methods to Improve Diagnostic
Assessment and Services (MIDAS) project we describe the development
and validation of the Diagnostic Inventory for Depression (DID),
a new self-report scale designed to assess the DSM-IV symptom inclusion
criteria for a major depressive episode, assess psychosocial impairment
due to depression, and evaluate subjective quality of life. A large
sample of 626 psychiatric outpatients completed the DID and were
interviewed with the Structured Clinical Interview for DSM-IV (SCID).
The measure's test-retest reliability, discriminant and convergent
validity, and sensitivity to clinical change were investigated.
The DID subscales achieved high levels of internal consistency and
test-retest reliability. The DID was more highly correlated with
another self-report measure of depression than with measures of
anxiety, substance use problems, eating disorders, and somatization,
thereby supporting the convergent and discriminant validity of the
scale. The DID was also highly correlated with interviewer ratings
of the severity of depression and psychosocial functioning, and
DID symptom severity scores were significantly different in depressed
patients with mild, moderate, and severe levels of depression. The
DID was a valid measure of symptom change. Finally, the DID was
significantly associated with a diagnosis of major depressive disorder.
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