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A New Method for Inducing a Depression-Like Behavior in Rats

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Common mental disorders, subthreshold symptoms and disability: longitudinal study.

Dheeraj Rai¹, Petros Skapinakis, Nicola Wiles

¹MRCPsych,AcademicUnitofPsychiatry, University of Bristol, Cotham House, Cotham Hill, Bristol BS6 6JL, UK. dheeraj.rai@bristol.ac.uk

The British Journal of Psychiatry : the Journal of Mental Science

|November 2, 2010

Summary

Common mental disorders and subthreshold psychiatric symptoms are linked to new functional disability and lost workdays. Ignoring subthreshold symptoms in surveys underestimates the true burden of psychiatric conditions.

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Area of Science:

Psychiatry
Public Health
Epidemiology

Background:

Common mental disorders and subthreshold psychiatric symptoms represent a significant public health concern.
Previous research has primarily focused on diagnosed disorders, potentially overlooking the impact of subthreshold symptoms.

Purpose of the Study:

To investigate the independent association of common mental disorders and subthreshold psychiatric symptoms with incident functional disability.
To quantify the contribution of subthreshold symptoms to the overall burden of disability and work absence.

Main Methods:

Utilized a representative UK population sample.
Assessed common mental disorders and subthreshold psychiatric symptoms at baseline.
Tracked new-onset functional disability and workdays lost over an 18-month follow-up period.

Main Results:

Both diagnosed mental disorders and subthreshold psychiatric symptoms were independently associated with increased functional disability.
Subthreshold symptoms accounted for nearly half of the total functional disability burden.
Over 32 million workdays were lost in the year preceding the study due to these symptoms.

Conclusions:

Subthreshold psychiatric symptoms significantly contribute to functional disability and work absence.
Excluding subthreshold symptoms from surveys leads to a substantial underestimation of psychiatric morbidity's impact.
Public health initiatives and research should consider the full spectrum of psychiatric symptoms for accurate burden assessment.