Dual-Process Bereavement Group Intervention (DPBGI) for Widowed Older Adults

To examine the primary and secondary outcomes of a theory-driven group bereavement intervention for widowed older adults through a cluster-randomized controlled trial.

Twelve community centers providing health and social services for elderly people were randomly assigned to the experimental condition, the dual-process bereavement group intervention-Chinese (DPBGI-C) and to the control condition, the loss-oriented bereavement group intervention-Chinese (LOBGI-C). Both interventions comprised weekly, 2-hr sessions for 7 weeks followed by a 4-hr outing in the eighth week. Of 215 widowed older adults contacted and assessed, 125 eligible participants were interviewed three times-preintervention, postintervention, and at a 16-week follow-up-to assess complicated grief symptoms, anxiety, depression, loneliness, and social support.

Using intention-to-treat analysis, both interventions produced improvements in grief, depression, and social support, but effect sizes were larger with the DPBGI-C. The participants in the DPBGI-C condition also reported reduced anxiety, emotional loneliness, and social loneliness, whereas those in the LOBGI-C condition did not. There were interactions between intervention type and time with respect to grief, anxiety, emotional loneliness, and social loneliness.

Although traditional LOBGI-C can help to reduce grief and depression in bereaved older adults, the DPBGI-C was found to be superior as it had a greater and more extensive impact on outcomes. This is the first study of the effectiveness of this evidence-based, theory-driven intervention for widowed Chinese older adults and has implications for theory building and practice.