Longitudinal Study 2011 to 2021: Completeness of census linkage

Summary

A summary of the quality of the linkage of Census 2021 to the ONS Longitudinal Study (LS). Quality measures include tracing rates, sampling fractions and forwards and backwards linkage rates.

Data

• Longitudinal Study, England and Wales: tracing rates

  Tracing rates by different variables for members of the Office for National Statistics Longitudinal Study in Census 2021 for England and Wales.

• Longitudinal Study, England and Wales: forward linkage rates

  Forward linkage rates by different variables between the 2011 Census and Census 2021 for the Office for National Statistics’s Longitudinal Study for England and Wales.

• Longitudinal Study, England and Wales: tracing method

  Automatic and clerical tracing rates by different variables for members of the Office for National Statistics Longitudinal Study in Census 2021 for England and Wales.

• Longitudinal Study, England and Wales: forward linkage rates for intercensal immigrants

  Forward linkage rates for immigrants who entered the Office for National Statistics Longitudinal Study for England and Wales between the 2011 Census and Census 2021.

• Longitudinal Study, England and Wales: forward linkage rates for intercensal births

  Forward linkage rates for members of the Office for National Statistics Longitudinal Study for England and Wales who were born between the 2011 Census and Census 2021.

• Longitudinal Study, England and Wales: sampling fractions

  Sampling fractions by different variables for members of the Office for National Statistics Longitudinal Study that were in Census 2021 for England and Wales.

Methodology

• Longitudinal Study 2011 to 2021: Completeness of census linkage

  The quality of the linkage of Census 2021 to the Office for National Statistics Longitudinal Study, including tracing rates, sampling fractions, and forwards and backwards linkage rates.

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