Census Quality Survey
The Census Quality Survey (CQS) information paper describes the methodology and findings of the CQS in 2021. In particular, it outlines the extent to which the responses provided in the CQS, to both the household and individual questions, agreed with those captured in the census.
Census 2021 statement about data quality
The Census 2021 statement on data quality aims to assist users by providing information on two aspects of quality: the response rate and the item response rate.
Census 2021 population and household estimates for Northern Ireland quality assurance report
This quality assurance report was published alongside the release of Census 2021 population and household estimates for Northern Ireland.
It details the phases taken as part of the quality assurance process to ensure the Census 2021 statistics are based on sound data and methods, as well as being trustworthy and of high quality.
Census 2021 quality assurance strategy
The Census 2021 quality assurance strategy outlines the quality assurance work that will be undertaken by NISRA to ensure that the outputs released from the 2021 Census are robust, reliable and meet the needs of users.