A Randomized Control Trial for ReDeSign: A Dementia-Friendly Mobile Microlearning Training for Store Workers in Japan

Dementia-friendly training should be incorporated in neighborhood stores for people living with dementia to maintain engagement in social activities. However, there is a lack of evidence of dementia-friendly training in these workplaces, and existing trainings have time constraints. We developed a mobile microlearning program based on stigma theory and the bystander intervention model. This study aimed to evaluate the microlearning program's effectiveness.

Convenience store workers in Tokyo were recruited for a randomized, waiting-list, and controlled trial. The intervention group completed a 50-min online course. The primary outcome was an attitude toward people living with dementia. The secondary outcomes were knowledge of dementia and helping behavior toward customers suspected of having dementia. Data were collected at baseline, after 1 month, and 4 months following the randomization.

Process evaluations confirmed satisfaction and high completion rates of the program. In total, 150 participants were included in the analysis. The intervention group showed significantly greater improvements in attitude (Hedge's g = 0.70) and knowledge (g = 0.59) after 1 month, compared to the control group. Helping behavior increased in the intervention group, although it did not differ significantly between the groups. All outcomes remained significantly improved after 4 months.

The findings provide evidence that dementia-friendly training reduces the general public's stigma and increases helping behavior in stores. Mitigation of time constraints through mobile microlearning is expected to contribute to the dissemination and help people living with dementia maintain their social participation in the communities. Clinical Trials Registration Number: UMIN000043623.