The inventory of depressive symptomatology (IDS): Psychometric properties

A. J. Rush, C. M. Gullion, M. R. Basco, R. B. Jarrett, M. H. Trivedi

Research output: Contribution to journalArticle

1435 Scopus citations

Abstract

The psychometric properties of the 28- and 30-item versions of the Inventory of Depressive Symptomatology, Clinician-Rated (IDS-C) and Self-Report (IDS-SR) are reported in a total of 434 (28-item) and 337 (30-item) adult out-patients with current major depressive disorder and 118 adult euthymic subjects (15 remitted depressed and 103 normal controls). Cronbach's a ranged from 0.92 to 0.94 for the total sample and from 0.76 to 0.82 for those with current depression. Item total correlations, as well as several tests of concurrent and discriminant validity are reported. Factor analysis revealed three dimensions (cognitive/mood, anxiety/arousal and vegetative) for each scale. Analysis of sensitivity to change in symptom severity in an open-label trial of fluoxetine (N = 58) showed that the IDS-C and IDS-SR were highly related to the 17-item Hamilton Rating Scale for Depression. Given the more complete item coverage, satisfactory psychometric properties, and high correlations with the above standard ratings, the 30-item IDS-C and IDS-SR can be used to evaluate depressive symptom severity. The availability of similar item content for clinician-rated and self-reported versions allows more direct evaluations of these two perspectives.

Original languageEnglish (US)
Pages (from-to)477-486
Number of pages10
JournalPsychological Medicine
Volume26
Issue number3
StatePublished - May 1 1996

ASJC Scopus subject areas

  • Applied Psychology
  • Psychiatry and Mental health

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