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Comparison of self-report and clinician ratings on two inventories of depressive symptomatology.

AbstractOBJECTIVE:
This study evaluated the concordance between the self-report and the clinician-rated versions of the Inventory of Depressive Symptomatology (IDS-30) and between the two versions of the briefer 16-item Quick Inventory of Depressive Symptomatology (QIDS-16).
METHODS:
Data were gathered for 544 adult outpatients with psychotic (N = 106) or nonpsychotic (N = 438) major depressive disorder at 14 public sector mental health clinics in the Texas Medication Algorithm Project. Data for the QIDS-16 were extracted from the IDS-30. Baseline scores and scores from the final study visit at or before month 12 were analyzed. The clinician-rated and the self-report versions of each scale were compared in their identification of response to treatment and remission.
RESULTS:
The average baseline IDS-SR-30 total score was 2.2 points higher (indicating greater severity) than the IDS-C-30 score; the average QIDS-SR-16 total score was only .3 points higher than the QIDS-C-16 score. The IDS-SR-30 and the IDS-C-30, as well as the QIDS-C-16 and QIDS-SR-16, agreed substantially in classifying response and remission for patients, regardless of whether the patients had psychotic features. None of a large number of clinical and demographic features accounted for differences between the QIDS-SR-16 and QIDS-C-16 total scores.
CONCLUSIONS:
Either the IDS-30 or the QIDS-16 self-report adequately assesses depressive symptom severity among public-sector outpatients with major depressive disorder. The briefer QIDS-16 may be preferred to save time and cost.
AuthorsA John Rush, Thomas J Carmody, Hisham M Ibrahim, Madhukar H Trivedi, Melanie M Biggs, Kathy Shores-Wilson, M Lynn Crismon, Marcia G Toprac, T Michael Kashner
JournalPsychiatric services (Washington, D.C.) (Psychiatr Serv) Vol. 57 Issue 6 Pg. 829-37 (Jun 2006) ISSN: 1075-2730 [Print] United States
PMID16754760 (Publication Type: Comparative Study, Evaluation Study, Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, Non-P.H.S.)
Topics
  • Adult
  • Demography
  • Depression (diagnosis, epidemiology, psychology)
  • Depressive Disorder, Major (diagnosis, epidemiology, psychology)
  • Diagnostic and Statistical Manual of Mental Disorders
  • Female
  • Health Personnel
  • Humans
  • Male
  • Observer Variation
  • Psychotic Disorders (diagnosis, epidemiology, psychology)
  • Self Disclosure
  • Severity of Illness Index
  • Surveys and Questionnaires

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