Cited by 194Treatment of Major DepressionAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesMental Health Treatment and Access

Ten-Year Prospective Follow-Up Study of the Naturalistic Course of Dysthymic Disorder and Double Depression

Klein, Daniel N., Shankman, Stewart A., Rose, Suzanne·2006·American Journal of Psychiatry

Abstract

OBJECTIVE: The purpose of this study was to describe the 10-year course and outcome of dysthymic disorder. METHOD: The authors conducted a naturalistic, prospective, longitudinal follow-up of 97 adults with early-onset dysthymic disorder and 45 adults with nonchronic major depressive disorder selected from consecutive admissions to several outpatient facilities. Follow-up data were obtained for 90% of the cohort. Assessments were conducted at baseline, 30, 60, 90, and 120 months. Measures included the Longitudinal Interval Follow-Up Evaluation and the Hamilton Depression Rating Scale. RESULTS: The Kaplan-Meier estimated recovery rate from dysthymic disorder was 73.9%, with a median time to recovery of 52 months. Among patients who recovered, the estimated risk of relapse into another period of chronic depression was 71.4%. Chronic depressive relapses took a variety of forms and were not limited to dysthymia. Nonetheless, the distinction between chronic and nonchronic forms of depression was relatively stable over the follow-up period. Mixed-effects models indicated that patients with dysthymic disorder experienced a significantly slower rate of improvement in symptoms over time and exhibited significantly greater depression at the 10-year point, compared to patients with nonchronic major depression. CONCLUSIONS: Dysthymic disorder has a protracted course and is associated with a high risk of relapse. The nature of chronic depressive episodes varies over time within individuals, indicating that the various manifestations of chronic depression in DSM-IV do not represent distinct disorders. However, the distinction between chronic and nonchronic forms of depression is relatively stable and may provide a useful basis for subtyping in genetic and neurobiological research.

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Crossref · 10.1176/ajp.2006.163.5.872

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Authors
Klein, D. N., Shankman, S. A., & Rose, S.
Affiliations
Stony Brook University (US)
Venue
American Journal of Psychiatry
Published
2006-05
Volume
163
Issue
5
Pages
872-880
ISSN
  • 0002-953X (ISSN-L)
  • 1535-7228
OpenAlex
W2084454764
Cited by
194
References
26
Citations by year
2026: 4 · 2025: 3 · 2024: 7 · 2023: 6 · 2022: 6 · 2021: 7 · 2020: 6 · 2019: 7 · 2018: 10 · 2017: 10 · 2016: 14 · 2015: 12 · 2014: 12 · 2013: 10 · 2012: 10
FWCI
7.31
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (R01MH045757)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
Keywords
dysthymia, double depression, chronic depression, course of depression, relapse, recovery, long-term outcomes, depression subtyping
MeSH terms
Adult, Chronic Disease, Major Depressive Disorder, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Terminology as Topic, Prognosis, Prospective Studies, Psychiatric Status Rating Scales, Recurrence, Risk Factors, Severity of Illness Index, Cohort Studies, Comorbidity, Survival Analysis, Age of Onset, Dysthymic Disorder, Diagnostic and Statistical Manual of Mental Disorders

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