COVID-19 Symptom Map

Introduction
‍These maps are based on information provided by 20,000 Evergreen Life users. The number of users completing the COVID Check is growing every day. The more information the Evergreen Life community provide, the more these visualisations can teach the nation about the virus and its spread.

‍Disclaimer
‍The data uses information provided by 20,000 out of 750,000 Evergreen Life users. As there are more users responding in some areas than in others, the map information is a stronger reflection of the true percentages in some areas than others. Where there is insufficient data to be confident of the true percentage, we have highlighted the area in lilac – we define ‘insufficient data’ as an estimated size of the (beta distributed) error exceeding 10%. We are doing more statistical work to adjust these maps to reflect the proportions of symptoms as a proportion of the population and the mix of age groups living in different areas. The statistical analysis is being done by Evergreen Life in partnership with the University of Manchester's Department of Mathematics, University of Liverpool’s Department of Electrical Engineering and Institute of Population Health Sciences.