An online shared decision-making intervention for dementia prevention: A parallel group randomized pilot study

OBJECTIVES The objective of this study was to evaluate the acceptability and efficacy of an online dementia prevention intervention based on a cognitive behavioral shared decision-making model. DESIGN This was an unblinded pilot study in which participants were randomly assigned to one of two treatment groups. SETTING This study was carried out remotely via telephone, video conferencing and online data collection. PARTICIPANTS Persons 50 years of age and older interested in developing more brain healthy lifestyles were recruited. INTERVENTION Both groups received 12 weekly sessions on lifestyle factors related to cognitive decline. The treatment as usual (TAU) group received the information and was encouraged to make lifestyle changes. The cognitive behavioral shared decision-making model (CBSDM) group received structured weekly sessions with support for evidence-informed personal goal choices and behavior change strategies. MEASUREMENTS Primary outcome measures were the Alzheimer Disease Risk Inventory and the Memory Self-Efficacy and Dementia Knowledge Assessment Scales. Participants reported brain health activities during the first, sixth, and 12 th weeks of the study. RESULTS The intervention was viewed positively by participants who all said they would participate in it again. Participants in the CBSDM group showed increases in knowledge of dementia risk factors and in exercise. Other outcomes were consistent with moderate to large effect sizes for both groups. CONCLUSIONS An online intervention providing psychoeducation and behavior change support was viewed positively by older adults. Results provides preliminary support for the CBSDM intervention’s efficacy in promoting brain health in older adults. (243 words) Registered at clinicaltrials.gov NCT04822129