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J Affect Disord. 2012 Jul;139(2):172-80. doi: 10.1016/j.jad.2012.01.033. Epub 2012 Mar 3.

Prevalence and correlates of the proposed DSM-5 diagnosis of Chronic Depressive Disorder.

Author information

1
The University of Queensland, School of Medicine, Academic Discipline of Psychiatry, K Floor, Mental Health Centre, Royal Brisbane and Women's Hospital, Herston, QLD 4029, Australia. j.murphy5@uq.edu.au

Abstract

CONTEXT:

The draft proposal to add Chronic Depressive Disorder to DSM-5 will combine DSM-IV Dysthymic Disorder and Major Depressive Disorder, with chronic specifier, into a single diagnosis.

OBJECTIVE:

The objective of this study is to estimate the prevalence and correlates of the proposed DSM-5 diagnosis of Chronic Depressive Disorder using unit record data from the 2007 Australian National Survey of Mental Health and Wellbeing.

DESIGN:

Secondary analysis of a nationally representative household survey.

SETTING:

Urban and rural census tracts.

PARTICIPANTS:

One individual between the ages of 16 and 85 years from 8841 households was interviewed for the survey.

MAIN OUTCOME MEASURE:

Lifetime prevalence estimates for chronic and non-chronic depression were determined using data from the World Health Organization's Composite International Diagnostic Interview, version 3.0 (WMH-CIDI 3.0).

RESULTS:

Chronic depression of at least two years' duration had a lifetime prevalence of 4.6% (95% CI: 3.9-5.3%) and was found in 29.4% (95% CI: 25.6-33.3%) of individuals with a lifetime depressive disorder. Higher rates of psychiatric co-morbidity (OR=1.42; 95% CI=1.26-1.61), older age (OR=1.04; 95% CI=1.02-1.05), a younger age of onset (OR=0.97; 95% CI=0.95-0.98) and more frequent episodes of depression (OR=1.75; 95% CI=1.07-2.86) were found to be significant correlates of chronic depression. The first episode of depression for individuals with chronic depression often developed after the death of someone close (OR=2.38; 95% CI 1.16-5.79).

CONCLUSIONS:

Chronic depression is highly prevalent among community-residing persons and has a set of correlates that discriminate it from non-chronic depression. The distinction between chronic and non-chronic depression proposed for DSM-5, in the form of Chronic Depressive Disorder, seems to be warranted.

PMID:
22381955
DOI:
10.1016/j.jad.2012.01.033
[Indexed for MEDLINE]
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