Unmodelled national summary of reported data across the different data sources.

Counts are from the processed data after exclusion criteria are applied. Trust reporting counts are the lowest and highest number of participating Trusts for a given report post exclusion criteria. The mean population coverage is taken as the mean national proportion of the population over the time series. Peak admissions are taken as the maximum admissions in each report and cumulative admissions the sum of all admissions reported. These metrics are not corrected for time varying participation and population catchment sizes. Regional breakdowns are given in Table A in S1 Text. The reporting frequency and lag are given based on approximate completeness delays.