Abstract
Objective: To investigate whether subtypes of depression predict differential outcomes of treatment with selective serotonin-reuptake inhibitor (SSRI) and a tricyclic antidepressant in major depression. Method: Among 811 adults with moderate-to-severe depression, melancholic, atypical, anxious and anxious-somatizing depression subtypes established at baseline were evaluated as predictors of outcome of treatment with flexible dosage of the SSRI escitalopram or the tricyclic antidepressant nortriptyline. The primary outcome measure was the Montgomery-Åsberg Depression Rating Scale (MADRS). Secondary outcome measures were the 17-item Hamilton Rating Scale for Depression (HRSD-17) and the Beck Depression Inventory (BDI). Results: Melancholic depression was associated with slightly worse outcomes among individuals treated with escitalopram, but did not affect outcome of treatment with nortriptyline. The interaction between melancholic depression and drug did not reach statistical significance for the primary outcome measure and significant results for secondary outcome measures were not robust in sensitivity analyses. Atypical depression was unrelated to outcome of treatment with either antidepressant. Anxious and anxious-somatizing depression did not predict outcome on the primary measure, but inconsistently predicted worse outcome in some secondary analyses. Limitations: Some participants were non-randomly allocated to drug. Therefore, drug-by-predictor interactions had to be validated in sensitivity analyses restricted to the 468 randomly allocated individuals. Conclusions: Melancholic, atypical or anxious depression, are not sufficiently robust differential predictors of outcome to help clinician choose between SSRI and tricyclic antidepressants. There is a need to investigate other predictors of outcome.
Original language | English |
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Pages (from-to) | 112-120 |
Number of pages | 9 |
Journal | Journal of Affective Disorders |
Volume | 132 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Jul 2011 |
Externally published | Yes |
Bibliographical note
Funding Information:The GENDEP project was funded by the European Commission Framework 6 grant, EC Contract Ref.: LSHB-CT-2003-503428. Lundbeck provided nortriptyline and escitalopram for the GENDEP study. GlaxoSmithKline and the UK National Institute for Health Research of the Department of Health contributed to the funding of the sample collection at the Institute of Psychiatry, London. RU is supported by a grant from the European Commission (Grant Agreement #115008). The sponsors had no role in the design and conduct of the study, in data collection, analysis, interpretation, writing of the report, or in the decision to submit the paper for publication.
ASJC Scopus Subject Areas
- Clinical Psychology
- Psychiatry and Mental health
PubMed: MeSH publication types
- Comparative Study
- Journal Article
- Multicenter Study
- Randomized Controlled Trial