Psychometric properties of the Quick Inventory of Depressive Symptomatology in adolescents.
Journal Article (Journal Article)
OBJECTIVE: The clinician-rated (QIDS-C₁₆) and self-report (QIDS-SR₁₆) versions of the 16-item Quick Inventory of Depressive Symptomatology have been extensively examined in adult populations. This study evaluated both versions of the QIDS and the 17-item Children's Depressive Rating Scale - Revised (CDRS-R) in an adolescent outpatient sample. METHOD: Both the QIDS-C₁₆ and QIDS-SR₁₆ were completed for the adolescents. Three different methods were used to complete the QIDS-C₁₆: (a) adolescents' responses to clinician interviews; (b) parents' responses to clinician interview; and (c) a composite score using the most pathological response from the two interviews. Both classical and item response theory methods were used. Factor analyses evaluated the dimensionality of each scale. RESULTS: The sample included 140 adolescent outpatients. All versions of the QIDS, save the parent interview, and the CDRS-R were very reliable (α ≥ 0.8). All four versions of the QIDS are reasonably effective and unidimensional. The CDRS-R was clearly at least two-dimensional. The CDRS-R was the most discriminating among low and extremely high levels of depression. The QIDS-SR₁₆ was the most discriminating at moderate levels of depression. There was no relation between the QIDS scores and concurrent Axis III comorbidities. CONCLUSION: The QIDS-C₁₆ and the QIDS-SR₁₆ are suitable for use in adolescents.
- Bernstein, IH; Rush, AJ; Trivedi, MH; Hughes, CW; Macleod, L; Witte, BP; Jain, S; Mayes, TL; Emslie, GJ
- December 2010
Volume / Issue
- 19 / 4
Start / End Page
- 185 - 194
Pubmed Central ID
Electronic International Standard Serial Number (EISSN)
Digital Object Identifier (DOI)
- United States