All methodology

  • Domestic abuse QMI

    Methodoleg | Released on 24 November 2023

    Quality and Methodology Information for domestic abuse detailing the strengths and limitations of the data, methods used and data uses and users.

    Allweddeiriau: data, comparisons, information, characteristics, accuracy

  • Understanding international migration statistics

    Methodoleg | Released on 23 November 2023

    This article brings together important information to inform users and explain any misunderstandings around our migration statistics.

    Allweddeiriau: immigration, nationality, reasons for migration, data sources, estimates

  • Quality and methodology information (QMI) for Census 2021

    Methodoleg | Released on 23 November 2023

    Details the strengths, limitations, uses, users and methods used for Census 2021, England and Wales.

    Allweddeiriau: population, data collection, , data collection, response rate, quality assurance, accuracy

  • Population estimates for England and Wales, mid-2022: methods guide

    Methodoleg | Released on 23 November 2023

    Methodology guidance on national and subnational mid-year population estimates for England and Wales, which are broken down by administrative area, age, sex and components of population change.

    Allweddeiriau: Methodology, population estimates, England, Wales

  • Methods to produce provisional long-term international migration estimates

    Methodoleg | Released on 23 November 2023

    An explanation of the methods used to produce the latest provisional statistics on migration flows into and out of the UK.

    Allweddeiriau: methods, experimental, provisional, international, migration

  • Business demography QMI

    Methodoleg | Released on 22 November 2023

    Quality and methodology information for UK business demography, detailing the strengths and limitations of the data, methods used, and data uses and users.

    Allweddeiriau: business births, business deaths, activities, survivals, employer, region

  • Multiple business registrations at a single postcode, UK: 2022

    Methodoleg | Released on 22 November 2023

    Business demography explainer covering additional information on the impact of multiple registrations at a single postcode.

    Allweddeiriau: multiple, business, registrations, postcode

  • Household Costs Indices for UK household groups QMI

    Methodoleg | Released on 20 November 2023

    Quality and Methodology Information for the Household Costs Indices for UK household groups.

    Allweddeiriau: prices, inflation, subgroups, CPI, CPIH

  • Population statistics and sources guide

    Methodoleg | Released on 17 November 2023

    A comparison of the different types of population estimate that are published on the ONS website or planned for future publication. Includes information about whether these are official estimates of the population or used only for wider research, as well as the sources, coverage and main uses and comparability issues for the estimate.

    Allweddeiriau: census 2021, population statistics transformation

  • Public service productivity: total, UK QMI

    Methodoleg | Released on 17 November 2023

    Quality and Methodology Information for the Public service productivity releases: strengths and limitations of the data, methods used, and data uses and users.

    Allweddeiriau: data quality, public sector, output, healthcare, education