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Related Experiment Videos

Depressive mixed state frequency: age/gender effects.

Franco Benazzi1

  • 1The Outpatient Psychiatry Private Center, A University of California in San Diego Collaborating Center, Ravenna and Forlì, Italy. f.benazzi@fo.nettuno.it

Psychiatry and Clinical Neurosciences
|August 24, 2002
PubMed
Summary

Depressive mixed state (DMX) affects nearly half of patients, being more common in females and decreasing with age. This finding highlights the clinical relevance of DMX in mood disorder research.

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Area of Science:

  • Psychiatry
  • Mood Disorders
  • Clinical Psychology

Background:

  • Depressive mixed state (DMX), characterized by a major depressive episode (MDE) with concurrent hypomanic symptoms, is understudied.
  • Age and gender are known influencing factors in mood disorders, necessitating investigation into their role in DMX.
  • Understanding DMX prevalence is crucial for effective diagnosis and treatment strategies.

Purpose of the Study:

  • To investigate the impact of age and gender on the frequency of depressive mixed state (DMX) in patients with major depressive episodes (MDE).
  • To assess the prevalence of DMX, specifically defined as MDE with three or more hypomanic symptoms (DMX3), in unipolar and bipolar II outpatients.
  • To explore the relationship between age, gender, and DMX3 frequency in a clinical sample.

Main Methods:

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  • Systematic assessment of hypomanic symptoms during MDE using the Structured Clinical Interview for DSM-IV in 144 unipolar and 218 bipolar II drug-free outpatients.
  • Definition of DMX3 as a MDE with three or more concurrent hypomanic symptoms.
  • Logistic regression analysis to test associations between DMX3 frequency, age, and gender.

Main Results:

  • The overall frequency of DMX3 was found to be 43.9%.
  • DMX3 was significantly more prevalent in females compared to males.
  • The frequency of DMX3 demonstrated a decrease with increasing age, linked to a lower prevalence of bipolar II disorder in older patients.

Conclusions:

  • The high frequency of DMX3 supports its clinical significance and the utility of the established definition.
  • Findings suggest a potential need for bipolar vulnerability for DMX3 development, even in later life.
  • The study underscores the importance of considering age and gender in the diagnosis and management of depressive mixed states.