Effects of general change mechanisms on outcome in telephone-based cognitive-behavioral therapy for distressed family caregivers.

Background: The study investigated the influence of general change mechanisms (GCMs) on outcome in telephone-based cognitive-behavioral therapy (CBT) for family caregivers.

Methods: In a stepped-care intervention approach, highly distressed family caregivers received telephone-based CBT after completing a care counseling intervention. Sixty-six therapist-caregiver dyads rated emotional bond, agreement on collaboration, problem actuation, resource activation, clarification of meaning, and mastery after each of 12 therapy sessions. Outcomes were caregiver burden (SCQ-AV) and depression (CES-D) after therapy. Associations of GCMs with outcome were examined in multilevel regression models.

Results: Caregiver burden was significantly predicted by caregiver-rated emotional bond (β = -0.18) as well as therapist-rated resource activation (β = -0.26), problem actuation (β = -0.22), clarification of meaning (β = -0.18), and mastery (β = -0.18). None of the GCMs predicted depression from any perspective.

Conclusion: The findings suggest that GCMs are relevant for reducing caregiver burden in CBT for family caregivers and should be fostered in treatment manuals, in particular therapist-rated GCMs. Since therapist and caregiver perspectives differed in predicting caregiver burden, future research should investigate perspective congruence and its effect on therapy outcome.