Multicomponent Intervention for Distressed Informal Caregivers of People With Dementia: A Randomized Clinical Trial

Area of Science:

• Gerontology
• Psychiatry
• Public Health

Background:

• Informal caregivers of people with dementia require effective multicomponent interventions.
• Evidence on the most effective components of these interventions is lacking.

Purpose of the Study:

• To optimize interventions for informal dementia caregivers using a multiphase optimization strategy.
• To examine the effects of five psychosocial components on caregiver outcomes.

Main Methods:

• A randomized clinical trial with a fractional factorial design was conducted.
• 250 informal caregivers were randomized into 16 experimental conditions.
• Assessments were performed at baseline, 6 months, and 12 months.

Main Results:

• Mindfulness-based intervention (MBI) significantly reduced depressive symptoms and improved mindfulness, social support, and dementia care management.
• Support group (SG) component significantly improved perceived social support.
• MBI showed synergistic effects with self-care skills (SC) and behavioral problem management (BPM) on depression, and with SG on social support.

Conclusions:

• Integrating MBI with SC, SG, or BPM is an effective multicomponent approach for supporting dementia caregivers.
• Ongoing support is necessary to mitigate potential short-term risks.
• Further research is needed to validate the efficacy of this optimized intervention package.