Census 2011 data now included in the Northern Ireland Longitudinal Study (NILS)
The NILS is a large-scale record linkage study of approximately 500,000 people that was created by linking statistical and administrative data sources. The NILS previously included the 2001 Census returns, demographic and migration events, and vital events (births and deaths)...and as of December 2013 now also includes 2011 Census data.