Keywords
Health self-awareness
Public health technology
Disease prevention
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Abstract
Objective: This study developed and evaluated the JOIA® app, analyzing its impact on self-awareness and health prevention, as well as its usability, security, and privacy within the public health system. Methods: The study was conducted in two stages: 1) development of JOIA® (for Android and iOS); 2) a pre-post interventional study, carried out in a public university hospital in southern Brazil, with 100 patients over 50 years old. Usability (System Usability Scale - SUS) and compliance with the General Data Protection Law (LGPD) were assessed. Results: 90% of patients downloaded and used the app, 95% found it useful, and 93% showed interest in continuing to use it. Self-awareness increased fivefold, health satisfaction improved 32 times, and recognition of prevention increased 3.6 times. Conclusion: JOIA® facilitated communication between patients and healthcare professionals, ensuring security in compliance with the LGPD. 68% rated usability as intermediate to excellent, highlighting areas for improvement in interface and user support. The app proved to be effective in promoting engagement and health prevention, with the potential to optimize the public health system and reduce costs.
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