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Mental health interventions and future major depression among primary care patients with subthreshold depression

Abstract Background Subthreshold depression is prevalent in primary care and is associated with poorer quality of life, higher health care use and increased risk of major depressive disorder (MDD). Currently, it is unclear how subthreshold depression should be managed in primary care and no studies...

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Bibliographic Details
Published in:Journal of affective disorders 2015-05, Vol.177, p.65-73
Main Authors: Davidson, Sandra K, Harris, Meredith G, Dowrick, Christopher F, Wachtler, Caroline A, Pirkis, Jane, Gunn, Jane M
Format: Article
Language:English
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Summary:Abstract Background Subthreshold depression is prevalent in primary care and is associated with poorer quality of life, higher health care use and increased risk of major depressive disorder (MDD). Currently, it is unclear how subthreshold depression should be managed in primary care and no studies have investigated the relationship between current models of care and the development of MDD. This study aimed to describe usual care over a six month follow-up for primary care patients with subthreshold depression and to investigate the relationship between usual care and the development of MDD. Methods Data were derived from 250 participants with subthreshold depression from the diamond study, a longitudinal cohort study of primary care patients. Participants completed questionnaires at three and six months on their health care use, the interventions they received and their depression status. Interventions were categorised according to the NICE guidelines for the management of depression in adults. Generalised estimating equation (GEE) models and logistic regression were used to estimate the association between receiving an intervention and MDD over six months. Results Four fifths (80.8%) of participants received a mental health intervention. Therapeutic listening, reassurance, pharmacotherapy and advice to exercise were most common. Subsequent MDD was predicted by history of depression, baseline depressive symptom severity and receiving a mental health intervention. Limitations Usual care was assessed via patient self-report. Conclusions Primary care physicians deliver mental health interventions to most subthreshold patients. However, it appears that current interventions are not averting MDD. Further research to identify effective interventions which are feasible in primary care is needed.
ISSN:0165-0327
1573-2517
1573-2517
DOI:10.1016/j.jad.2015.02.014