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Changing patterns in mental illness in the elderly

A B Christie

    The British Journal of Psychiatry : the Journal of Mental Science
    |February 1, 1982
    PubMed
    Summary
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    Elderly mental illness patterns shifted from functional disorders to dementia over 25 years, increasing hospital bed demand. Dementia care now requires more long-term beds, despite fewer functional illness admissions.

    Area of Science:

    • Geriatric psychiatry
    • Epidemiology of mental illness
    • Healthcare resource utilization

    Background:

    • A 1955 study at Graylingwell Hospital provides a baseline for comparison.
    • Significant shifts in mental illness patterns among the elderly have been observed over time.

    Purpose of the Study:

    • To replicate a previous study and investigate changes in mental illness patterns in the elderly over a 25-year period.
    • To quantify changes in diagnostic distribution, patient outcomes, and hospital bed requirements.

    Main Methods:

    • Replication of a 1955 study focusing on the residual in-patient population.
    • Analysis of diagnostic distribution and outcomes at 6 and 24 months post-admission.
    • Quantification of bed requirements for different diagnostic groups.

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    Main Results:

    • Dementia has become more prevalent than functional illness in terms of bed occupancy.
    • Discharge rates have changed significantly across most diagnostic groups, with a notable decrease in mortality.
    • A 38% overall increase in bed requirement at the two-year mark was observed, primarily driven by dementia cases.

    Conclusions:

    • The pattern of elderly mental illness has shifted, with a marked increase in dementia cases requiring long-term care.
    • Healthcare systems must adapt to the growing demand for beds for elderly patients with dementia.
    • While functional illnesses have decreased, the overall need for psychiatric inpatient beds has risen due to dementia prevalence.