@Article{info:doi/10.2196/57205, author="Nakagomi, Atsushi and Abe, Noriyuki and Chen, Yu-Ru and Ide, Kazushige and Kobayashi, Shuhei and Hanazato, Masamichi and Kondo, Katsunori", title="Messenger App--Based Information Provision for Promoting Social Participation to Enhance Well-Being Among Community-Dwelling Adults: Randomized Controlled Trial", journal="J Med Internet Res", year="2024", month="Nov", day="29", volume="26", pages="e57205", keywords="messenger app; event information; happiness; social participation; messenger; app; well-being; adults; aging; randomized controlled trial; RCT; information technology; social activity; Japan; urban community; health information; control group; multivariable regression; life satisfaction; digital intervention; community-dwelling", abstract="Background: Engaging in social activities, interacting with peers, and participating in community events may promote health and well-being. Recently, interventions leveraging information and communications technology have emerged as potent tools for promoting social connections and well-being. Particularly, messenger apps have become an integral part of our daily lives, facilitating communication, information dissemination, and social interaction. However, there remains a gap in the literature regarding the utilization of widely adopted messenger apps for this purpose. Objective: This study aimed to evaluate the impact of messenger app--based information provision aimed at promoting social participation on the enhancement of subjective well-being among Japanese community-dwelling adults. Methods: A 2-arm, parallel-group randomized controlled trial was conducted from October 2022 to January 2023 in the Kashiwa-no-ha campus area, Japan---an urban community with active local events. A total of 358 community-dwelling adults who use messenger apps daily were recruited for the study. Of these, 235 (65.6{\%}) participants completed the follow-up survey. Participants were randomly assigned to either the intervention group, receiving the health benefits of social participation and information about local events or spots via a messenger app, or the control group, receiving general health information. The primary outcome was subjective happiness after the intervention, measured on an 11-point scale ranging from 0 (Unhappy) to 10 (Happy). Secondary outcomes included life satisfaction, meaning of life, purpose in life, and participation in local events. The outcomes were analyzed with t tests (2-tailed) and multivariable regression based on the intention-to-treat method. Results: After the intervention, the intervention group reported a mean happiness score of 7.7 (SD 1.7), while the control group reported a score of 7.5 (SD 2.0), with no statistically significant difference (P=.40). Multivariable linear regression analysis adjusted for baseline outcome values and covariates showed that the coefficient of the intervention for life satisfaction was 0.30 (95{\%} CI --0.07 to 0.68; P=.12), while that for meaning of life was 0.33 (95{\%} CI --0.03 to 0.70; P=.07). There was no significant difference in event participation rates between the 2 groups during the study period (P=.22). However, 82.2{\%} (102/124) of the intervention group acknowledged the utility of the event information provided. Conclusions: Messenger app--based information provision did not yield a significant increase in subjective happiness, while there was a positive but not significant trend in life satisfaction. The findings underscore the need for more intensive intervention in future studies to harness the potential of digital interventions. Trial Registration: UMIN Clinical Trials Registry UMIN000049047; https://tinyurl.com/2zzrrae8 ", issn="1438-8871", doi="10.2196/57205", url="https://www.jmir.org/2024/1/e57205", url="https://doi.org/10.2196/57205", url="http://www.ncbi.nlm.nih.gov/pubmed/39612209" }