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Digital health is the convergence of digital technologies with health, healthcare, living, and society to enhance the efficiency of healthcare delivery and make medicines more personalized and precise. The discipline involves the use of information and communication technologies to help address the health problems and challenges faced by people under treatment. These technologies include both hardware and software solutions and services, including telemedicine, web-based analysis, email, mobile phones and applications, text messages, wearable devices, and clinic or remote monitoring sensors. Generally, digital health is concerned about the development of interconnected health systems to improve the use of computational technologies, smart devices, computational analysis techniques, and communication media to aid healthcare professionals and their clients manage illnesses and health risks, as well as promote health and wellbeing.
Digital health is a multi-disciplinary domain involving many stakeholders, including clinicians, researchers and scientists with a wide range of expertise in healthcare, engineering, social sciences, public health, health economics and data management.
As an outgrowth of the Digital Revolution characterized by "the mass production and widespread use of digital logic circuits, and its derived technologies, including the computer, digital cellular phone, and the Internet," key elements of digital health include wireless devices, hardware sensors and software sensing technologies, microprocessors and integrated circuits, the Internet, social networking, mobile/cellular networks and body area networks, health information technology, genomics, and personal genetic information.[page needed] 
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Various domains span digital health. These include Healthcare technology assessment and monitoring to prevent, diagnose or treat diseases, monitoring of patients, or for rehabilitation or long-term care. Such technologies include Assistive technologies and rehabilitation robotics for people with disabilities so as to aid in their independence to perform daily tasks, unobtrusive monitoring sensors and wearable devices. Clinical decision support aids clinicians at the point of care, including diagnosis, analysis and interpretation of patient-related data. Computational simulations, modeling and machine learning approaches can model health-related outcomes. E-health delivers health information and services to enable data transmission, storage and retrievial for clinical, educational and administrative purposes. Mobile health (or mhealth) is the practice of medicine and public health supported by mobile devices.
Health systems engineering applications in health care systems includes knowledge discovery, decision making, optimization, human factors engineering, quality engineering, and information technology and communication. Human-computer-environment interactions Human-computer interaction principles tend to be based around user-centered, experience-centered or activity-centered designs. Virtual reality, video gaming rehabilitation, and serious games to provide a social and interactive experience for healthcare student and patient education. Speech and hearing systems for natural language processing, speech recognition techniques, and medical devices can aid in speech and hearing (e.g. cochlear implants). Telehealth, telemedicine, telecare, telecoaching and telerehabilitation provide various forms of patient care remotely at a distance.
National digital programs exist to support healthcare, such as those of Canada Health Infoway built on core systems of patient and provider registries, clinical and diagnostic imaging systems, clinical reports and immunizations. By 2014, 75% of Canadian physicians were using electronic medical records.
In Uganda and Mozambique, partnerships between patients with cell phones, local and regional governments, technologists, non-governmental organizations, academia, and industry have enabled mHealth solutions.
The innovation process for digital health is an iterative cycle for technological solutions that can be classified into five main activity processes from the identification of the healthcare problem, research, digital solution, and evaluating the solution, to implementation in working clinical practices. Digital health may incorporate methods and tools adopted by software engineering, such as design thinking and agile software development. These commonly follow a user-centered approach to design, which are evaluated by subject-matter experts in their daily life using real-world data.
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