Public microdata teaching sample
The Census 2021 public microdata teaching sample for Northern Ireland is a 1% sample of individual records from Census 2021 with no identifying information and available to all for teaching of statistics and social sciences.
Safeguarded microdata sample
An anonymised sample of individuals, which will be available to approved researchers via specific end-user licence arrangements – the maximum size of the sample will be 5%. This sample will be drawn from, and overlap with, the proposed secure sample (maximum of 10%) of individuals.
The level of detail included for each record in the sample will be less detailed to reflect the associated access arrangements, and the need to preserve the confidentiality of the information.
Details of where and how to access safeguarded microdata samples will follow when they are available.
Secure microdata sample
An anonymised sample of individuals and an anonymised sample of households – the maximum size of these samples will be 10%. These samples will be non-overlapping and will be the most detailed available. Accordingly, they will only be available in the Secure Trusted Research Environment (TRE) Settings managed by the Office for National Statistics (ONS) and NISRA.
Details of where and how to access secure microdata samples will follow when they are available.
Microdata strategy
The Census 2021 microdata strategy is available to download. The strategy aims to help users find out more about the delivery of the proposed microdata products.