The core of HIRU’s work is linking information from a number of surveys and databases across Wales through the Secure Anonymised Information Linkage (SAIL) databank.
Prif waith HIRU yw cysylltu gwybodaeth o nifer o arolygon a chronfeydd data o bob rhan o Gymru drwy’r banc data Cyswllt Diogel Gwybodaeth Ddienw (SAIL).