Authors
Madhukar H Trivedi, AJ Rush, HM Ibrahim, TJ Carmody, MM Biggs, T Suppes, ML Crismon, K Shores-Wilson, MG Toprac, EB Dennehy, B Witte, TM Kashner
Publication date
2004/1
Journal
Psychological medicine
Volume
34
Issue
1
Pages
73-82
Publisher
Cambridge University Press
Description
Background
The present study provides additional data on the psychometric properties of the 30-item Inventory of Depressive Symptomatology (IDS) and of the recently developed Quick Inventory of Depressive Symptomatology (QIDS), a brief 16-item symptom severity rating scale that was derived from the longer form. Both the IDS and QIDS are available in matched clinician-rated (IDS-C30; QIDS-C16) and self-report (IDS-SR30; QIDS-SR16) formats.
Method
The patient samples included 544 out-patients with major depressive disorder (MDD) and 402 out-patients with bipolar disorder (BD) drawn from 19 regionally and ethnicically diverse clinics as part of the Texas Medication Algorithm Project (TMAP). Psychometric analyses including sensitivity to change with treatment were conducted.
Results
Internal consistencies (Cronbach's alpha) ranged from 0·81 to 0·94 for all four scales (QIDS-C16, QIDS-SR16, IDS-C30 …
Total citations
Scholar articles
MH Trivedi, AJ Rush, HM Ibrahim, TJ Carmody… - Psychological medicine, 2004