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  • Statistical properties of coronavirus (COVID-19) mortality data: error in longitudinally linked survey and administrative sources

    Released on: 04 June 2021 | Methodology

    Analysing the quality of the bespoke study dataset used in the published ONS articles on deaths involving the coronavirus (COVID-19) by ethnicity in England and Wales.

  • Comparing all-cause mortality between European countries and regions methodology

    Released on: 20 December 2022 | Methodology

    Quality, methodology and comparability information for data used to calculate excess all-cause mortality for the UK, its constituent countries and European countries and their regions as reported in Comparisons of all-cause mortality between European countries and regions. Includes methodology for calculating measures of excess mortality, quality of the data sources, comparability of the measures and how to interpret the data.

  • Regional gross fixed capital formation QMI

    Released on: 08 December 2023 | Methodology

    Quality and methodology information for regional gross fixed capital formation, with strengths and limitations of the data, methods used, and data uses and users.

  • Public Sector Transformation

    Released on: 13 November 2023 | Corporate Information

    How new methods, systems, and alternative data sources can improve the quality, timeliness and granularity of public sector finance statistics.

  • Environmental protection expenditure (EPE) survey QMI

    Released on: 13 June 2023 | Methodology

    Quality and Methodology Information for the environmental protection expenditure survey, detailing the strengths and limitations of the data, methods used, and data uses and users.

  • Gross domestic product (GDP) QMI

    Released on: 08 April 2022 | Methodology

    Quality and Methodology Information for gross domestic product (GDP), detailing the strengths and limitations of the data, methods used and data uses and users.

  • Admin-based long-term international migration estimates QMI

    Released on: 27 November 2025 | Methodology

    Quality and Methodology Information for long-term international migration statistics, detailing the strengths and limitations of the data, methods used, and data uses and users.

  • Producer Price Indices QMI

    Released on: 22 October 2025 | Methodology

    Quality and Methodology Information (QMI) report for the Producer Price Index, detailing the strengths and limitations of the data, methods used, and data uses and users.

  • Health state life expectancies, UK QMI: 2021 to 2023

    Released on: 04 July 2025 | Methodology

    Quality and methodology information for health state life expectancies, UK, detailing the strengths and limitations of the data, methods used and data uses and users.

  • Compositionally adjusted labour input (CALI) QMI

    Released on: 27 May 2025 | Methodology

    Quality and methodology information for compositionally adjusted labour input (CALI), detailing the strengths and limitations of the data, methods used, and data uses and users.