Tid: 25 januari 2017, kl 13-14
Plats: B705


To protect data properly before it is disseminated is important to all National Statistical Institutes, for legislative and ethical reasons, and for the credibility of the agency. The aim of statistical disclosure control (SDC) is to provide protection to the individual respondents by minimizing the risk of disclosing confidential information but to do so in a manner that preserves as much as possible of the features of the original unprotected data and not distorting the usefulness of the data. The Census performed in 2011 in Sweden was for the first time fully register-based. The system of registers that are in place to produce all tables for the Census will not only deliver data for the census, but, more importantly, it will be the foundation for future official statistics on housing and  household statistics. Thus finding  a solution for statistical disclosure limitation in the census data is integrated with the more extensive question on how to protect housing and household statistics in the future.

Other issues in SDC that have received attention in the last years at Statistics Sweden are: is there a need for SDC for estimates of change and do common protection rules apply when survey variables can attain negative values?