Received: 10 February 2021
Accepted: 3 May 2021
First Online: 12 May 2021
: D.T., M.C. and M.A. are part of the app data analytics team. D.T. is employed by Zühlke and M.A. is employed by Accenture; Zühlke and Accenture are contracted by the DHSC for app development and analytics. M.B. is lead scientist for the app. C.W., L.F., R.H., L.A.-D., D.B., M.K., C.H. and C.F. have acted as advisors for the DHSC on the app. DHSC runs the app, and manages the secure data environment where the analyses conducted here were performed. DHSC led dissemination of the findings in the UK.
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