A three-factor analytic model of the MADRS in geriatric depression.

Published

Journal Article

OBJECTIVE: Major depression is a heterogeneous disorder, perhaps comprising several clinical subtypes or subgroups of symptoms. This study examined whether items on the Montgomery-Asberg Depression Rating Scale (MADRS) form distinct symptom subgroups among geriatric depressive patients that might form the basis of new outcome measures for tracking treatment effects. METHOD: The study examined a sample of 225 adults age 59 and older diagnosed with major depression. Factor analysis with oblique rotation was used to analyze baseline MADRS item scores. RESULTS: Three distinct interpretable factors were obtained; all ten items loaded <0.60 on a domain. The first factor, dysphoric apathy/retardation, comprised five items: apparent sadness, reported sadness, lassitude, reduced concentration, and inability to feel. Psychic anxiety, the second factor, included three items: inner tension, pessimistic thoughts, and suicidal thoughts. The third factor, vegetative symptoms, resulted from items involving sleep and appetite. CONCLUSIONS: The study produced three interpretable MADRS factors reflecting geriatric depression dimensions that may be useable to monitor focused treatment outcomes.

Full Text

Duke Authors

Cited Authors

  • Parker, RD; Flint, EP; Bosworth, HB; Pieper, CF; Steffens, DC

Published Date

  • January 2003

Published In

Volume / Issue

  • 18 / 1

Start / End Page

  • 73 - 77

PubMed ID

  • 12497559

Pubmed Central ID

  • 12497559

Electronic International Standard Serial Number (EISSN)

  • 1099-1166

International Standard Serial Number (ISSN)

  • 0885-6230

Digital Object Identifier (DOI)

  • 10.1002/gps.776

Language

  • eng