Tarun Reddy Katapally ^1,2* Nadine Elsahli ¹ Jasmin Bhawra ³

• ¹ Western University, London, Canada
• ² Lawson Health Research Institute, London, Ontario, Canada
• ³ Toronto Metropolitan University, Toronto, Ontario, Canada

Background Global health systems are confronting challenges that intersect climate change with evolving communicable and non-communicable public health risks. Addressing these challenges requires systems integration via citizen big data that exist outside health systems. However, systems integration across jurisdictions is a complex challenge that requires stakeholder input. This study’s purpose was to conduct rapid systems mapping with international health system stakeholders to inform development and implementation of a global digital citizen science observatory (DiScO), which aims to catalyze digital transformation of health systems across jurisdictions. Methods A rapid qualitative systems mapping study was conducted during the International Society for Behavioral Nutrition and Physical Activity Annual Global Summit in Uppsala, Sweden, in June 2023. The choice of the venue and approach was informed by three key criteria: 1) Established evidence linking physical activity and nutrition with chronic diseases; 2) Concrete existing methods of obtaining citizen big data by physical activity and nutrition researchers; 3) Precedence of physical activity and nutrition researchers in conducting citizen science as well behavioural/clinical big data collection. The design of this study was an innovative pre-post systems map development, which consisted of 1) real-time rapid systems mapping (pre/initial map) by engaging with international stakeholders and 2) adjustment of real-time systems map (post/final map) after analyzing stakeholder discussion data. Results Rapid systems mapping resulted in a complex network that included key themes to successfully develop and implement DiScO: priorities, opportunities, risks, challenges, partnerships, and resources. Additionally, a new theme emerged organically through stakeholder group discussions – mitigation strategies. The adapted rapid systems map (i.e., after data analyses) depicts 23 key nodes of intervention across the seven key themes. Conclusions Rapid systems mapping at international symposia is a novel methodological approach to capture stakeholder input, particularly to understand complexity across international jurisdictions – an approach that can be replicated across disciplines and sectors to inform digital transformation of health systems. The development and implementation of DiScO, a platform for decentralization and democratization of technology, will take into consideration all the key nodes of intervention identified in the rapid systems map to ensure digital health for equity across global jurisdictions.