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Related Experiment Videos

Depression in persons with dementia

H Brodaty1, G Luscombe

  • 1Academic Department of Psychogeriatrics, Prince Henry Hospital, Sydney, New South Wales, Australia.

International Psychogeriatrics
|January 1, 1996
PubMed
Summary
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Clinically significant depression in dementia appears less common than previously thought, with rates varying by diagnostic tool. Most cases identified did not persist over a 12-month follow-up period, suggesting a tendency for remission.

Area of Science:

  • Geriatric Psychiatry
  • Neurology
  • Clinical Psychology

Background:

  • Depression is a common comorbidity in dementia, but its prevalence and clinical significance remain debated.
  • Previous studies have reported varying rates of depression in dementia patients, leading to uncertainty in diagnosis and management.

Purpose of the Study:

  • To investigate the prevalence and clinical course of depression in a cohort of outpatients with dementia.
  • To compare depression rates using different diagnostic criteria and scales.
  • To explore the relationship between cognitive impairment and depression severity.

Main Methods:

  • A study of 288 outpatients with dementia.
  • Assessment of depression using the Hamilton Rating Scale for Depression (HRSD), Geriatric Depression Scale (GDS), and DSM-IV criteria.

Related Experiment Videos

  • 12-month follow-up to assess the persistence of depression.

    • Main Results:

    • Prevalence rates of depression were 7.4% (HRSD), 8.0% (GDS), and 6.3% (DSM-IV).
    • Depression levels were higher in vascular dementia than Alzheimer's dementia based on rating scales, but not DSM-IV criteria.
    • Greater cognitive impairment correlated with higher HRSD scores, but not GDS scores.
    • Identified cases of clinical depression did not persist over the 12-month follow-up period.

    Conclusions:

    • Clinically significant depression in dementia may be less prevalent than commonly reported.
    • Depression in dementia tends to remit over time, suggesting a favorable prognosis for these cases.
    • The choice of diagnostic tool influences the observed prevalence of depression in dementia.