De Boni Raquel B, Mota Jurema C, Duncan Michael, Linconl Leonardo, Costa Giovanna Lucieri Alonso, Pimentel Sofia, Sales Kamila P, Gaspar Fabiana, Adaes Fernanda, Schuch Felipe B, Balanzá-Martinez Vicent, Kapczinski Flavio, Lima Renato S
Instituto de Comunicação e Informação Científica e Tecnológica, Fundação Oswaldo Cruz, (ICICT), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil.
Post-graduate program in Epidemiology and Public Health, National School of Public Health, Fiocruz, Rio de Janeiro, Brazil.
Digit Health. 2025 Jan 30;11:20552076251316719. doi: 10.1177/20552076251316719. eCollection 2025 Jan-Dec.
Promoting healthy lifestyle behaviors is essential for preventing and managing chronic and mental health conditions. This study aims to present a digital health platform accessible via PC or smartphone, , designed to foster lifestyle change among the Brazilian population. It evaluates interest, uptake, acceptability, usability, adherence, and retention over 12 weeks.
A fully online feasibility trial was conducted from April to December 2023. Participants were adults who lived in Rio de Janeiro and reported using the Brazilian Public Health System. Interest in and uptake were assessed via recruitment metrics. Acceptability and usability were measured using the Mobile App Rating Scale (MARS). Adherence was calculated as the percentage of completed challenges over 12 weeks, and retention was tracked at 4, 8, and 12 weeks.
Of 3812 individuals reached, 27.2% expressed interest in the app, with an uptake rate of 65.4%. A total of 401 participants were enrolled, predominantly women (73.3%) with higher education (61.6%). MARS acceptability scores were 2.9 for quality and 3.5 for specificity. Usability scores averaged around 3, with aesthetics rated the highest. Retention at 12 weeks was 4.5%, and the average adherence rate was 11.2%.
The attracted women and highly-educated individuals, but its effectiveness was constrained by high attrition. These findings highlight key challenges in DHI implementation, including the need for robust outreach, iterative improvements, and strategies to sustain engagement. Addressing digital access, literacy inequities, and strengthening regulations are critical for the future success and equity of DHIs in public health systems.
The trial was registered at the Brazilian Clinical Trials Registry (Registro Brasileiro de Ensaios Clínicos -REBEC)-number RBR-2ssyb6q.
促进健康的生活方式行为对于预防和管理慢性疾病及心理健康状况至关重要。本研究旨在推出一个可通过个人电脑或智能手机访问的数字健康平台，旨在促进巴西人群的生活方式改变。它评估了12周内的兴趣、采用情况、可接受性、可用性、依从性和留存率。
2023年4月至12月进行了一项完全在线的可行性试验。参与者为居住在里约热内卢且报告使用巴西公共卫生系统的成年人。通过招募指标评估兴趣和采用情况。使用移动应用评分量表（MARS）测量可接受性和可用性。依从性计算为12周内完成挑战的百分比，并在第4、8和12周跟踪留存率。
在3812名被触及的个体中，27.2%对该应用表示兴趣，采用率为65.4%。共招募了401名参与者，主要为女性（73.3%）且受过高等教育（61.6%）。MARS可接受性质量评分为2.9，特异性评分为3.5。可用性得分平均约为3，美学评分最高。12周时的留存率为4.5%，平均依从率为11.2%。
该平台吸引了女性和高学历人群，但其有效性受到高流失率的限制。这些发现凸显了数字健康干预实施中的关键挑战，包括需要强大的推广、迭代改进以及维持参与度的策略。解决数字接入、读写能力不平等问题以及加强监管对于公共卫生系统中数字健康干预的未来成功和公平性至关重要。
该试验在巴西临床试验注册中心（巴西临床试验注册处 - REBEC）注册，编号为RBR - 2ssyb6q。
