Journal
BRITISH JOURNAL OF PSYCHIATRY
Volume 196, Issue 1, Pages 13-17Publisher
ROYAL COLLEGE OF PSYCHIATRISTS
DOI: 10.1192/bjp.bp.109.067116
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Funding
- European Commission [PREDICT-QL4CT2002-00683]
- MRC [MC_U122797163, G0700837] Funding Source: UKRI
- Medical Research Council [MC_U122797163, G0700837] Funding Source: researchfish
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Background Factors associated with depression are usually identified from cross-sectional studies. Aims We explore the relative roles of onset and recovery in determining these associations. Method Hazard ratios for onset and recovery were estimated for 39 risk factors from a cohort study of 10045 general practice attendees whose depression status was assessed at baseline, 6 and 12 months. Results Risk factors have a stronger relative effect on the rate of onset than recovery, The strongest risk factors for both onset and maintenance of depression tend to be time-dependent. With the exception of female gender the strength of a risk factor's effect on onset is highly predictive of its impact on recovery. Conclusions Preventive measures will achieve a greater reduction in the prevalence of depression than measures designed to eliminate risk factors post onset. The strength of time-dependent risk factors suggests that it is more productive to focus on proximal rather than distal factors.
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