Observer-rated depression in long-term care: frequency and risk factors

Area of Science:

• Gerontology
• Psychiatry
• Epidemiology

Background:

• Depression is a significant health concern in older adults residing in long-term care (LTC) facilities.
• Understanding the prevalence, incidence, and risk factors for depression in this vulnerable population is crucial for effective management.

Purpose of the Study:

• To determine the prevalence and 6-month incidence of depression among LTC residents aged 65 and over.
• To identify baseline and time-varying risk factors associated with depression in this population.

Main Methods:

• A multisite, prospective observational study involving 274 residents aged 65+ in 7 LTC facilities.
• The Cornell Scale for Depression in Dementia (CSDD) was administered monthly by nurses for 6 months.
• Demographic, medical, and functional data were collected at baseline and monthly intervals.

Main Results:

• The prevalence of depression (CSDD score ≥ 6) was 19.0%.
• The incidence rate of depression was 73.3 per 100 person-years among residents without prevalent depression.
• Delirium diagnosis, pain, and diabetes were independently associated with prevalent depression. Baseline CSDD scores and severe cognitive impairment at follow-up were risk factors for incident depression.

Conclusions:

• Depression is highly prevalent in LTC residents, with significant incidence over a 6-month period.
• Identifying and managing conditions like delirium, pain, and diabetes is critical for preventing depression.
• Cognitive decline is a significant risk factor for developing incident depression in LTC settings.