Extended Data Table 1 Phases of our analysis

From: The epidemiological impact of the NHS COVID-19 app

  1. Phases are justified in terms of changes to the NHS COVID-19 App.
  2. *Changes in case numbers resulting from changes to the app will lag behind in time; we assumed by 8 days, hence for example the change in the app occurring on 23 December is not expected to be reflected in case numbers until 31 December.
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