Comparing the effectiveness of individual occupation-based reminiscence therapy at home and in a dementia care centre on cognitive function in older adults with mild dementia: a pilot randomised controlled trial

Background: The need for research on individual home therapies to promote continued community-dwelling among older adults with mild dementia is growing. This study aimed to compare the effects of individual occupation-based reminiscence therapy at home (IOBRT-H) and individual occupation-based reminiscence therapy in a dementia care centre (IOBRT-DCC) on cognitive function, depression, and instrumental activities of daily living (IADL) among community-dwelling older adults with mild dementia. Methods: This study was a randomised controlled trial. Twenty-six community-dwelling older adults with mild dementia were randomised to the IOBRT-H (n = 13) and IOBRT-DCC (n = 13) groups. The intervention was conducted for 10 weeks, with one session a week and each session lasting 60 min for both groups. Cognitive function was assessed using the Allen Cognitive Level Screen (ACLS), depression with the short form of the Geriatric Depression Scale Korean version (SGDS-K), and IADL using the Seoul-Instrumental Activities of Daily Living (S-IADL). Results: Both the IOBRT-H and IOBRT-DCC groups showed significant improvements in ACLS scores (P < 0.01 and P < 0.01, respectively). The SGDS-K score decreased only in the IOBRT-H group (P < 0.01). Between the groups, the IOBRT-H group had significantly greater improvements in both ACLS and SGDS-K scores than the IOBRT-DCC group (P < 0.05 and P < 0.05, respectively). Conclusion: This study's results indicated the potential for applying IBORT-H as an intervention to improve cognitive function and reduce depression in community-dwelling older adults with mild dementia. We expect the findings of this study to serve as useful foundational data for developing home-visiting cognitive programs.