Collaborative depression care for the old-old: findings from the IMPACT trial

Area of Science:

• Geriatric psychiatry
• Primary care research
• Mental health services

Background:

• Depression is a prevalent condition affecting adults across the lifespan.
• Collaborative care models aim to improve depression management in primary care settings.
• Age-related differences in treatment response for depression are not fully understood.

Purpose of the Study:

• To compare clinical outcomes of collaborative depression care between young-old (60-74 years) and old-old (75+ years) patient groups.
• To evaluate differences in treatment response and remission rates based on age.

Main Methods:

• Multisite randomized clinical trial involving 906 patients with major depression or dysthymia.
• Patients received 12 months of collaborative care managed by a depression clinical specialist.
• Outcomes measured included Symptom Checklist (SCL)-20 depression scores, treatment response, and complete remission at multiple follow-up points.

Main Results:

• No significant differences in the process of care between young-old and old-old patients.
• Both groups showed similar initial treatment response at 3 months.
• Young-old patients were significantly more likely to achieve sustained treatment response and remission at 6, 12, 18, and 24 months.

Conclusions:

• Collaborative depression care yields similar initial results for both young-old and old-old adults.
• Older adults (75+) may experience diminished long-term benefits from collaborative depression care.
• Further research is needed to optimize long-term depression management for the oldest populations.