Among the many firsts for the Census 2021 is how the published data will be disseminated, with products including a Flexible Table Builder (FTB).
The FTB makes it more challenging to protect greece rcs data unusual records in the published outputs because a data intruder could tabulate type of pet in turn against each of the other variables in the census. This could lead to the construction of an individual record revealing information from the census about a person or household.
In fact, a household doesn’t have to be that unusual to be at risk because any low count in a single variable table, say the only pet elephant in an area, could be used to identify that record in every table that uses type of pet.
Our shield against data intruders is our SDC methodology which has been specifically developed to protect Census 2021 data. We will use a combination of Targeted Record Swapping, Cell Key Perturbation and Automatic Disclosure Checks to ensure that no respondents, even those with elephants, can be identified in the published outputs with certainty.