The ‘Linkage Key’ is a unique code or data string which represents a unique person in a data set or administrative collection.
BENEFITS OF COLLECTING THIS INFORMATION:
A ‘Linkage Key’ makes it possible to count the number of persons who have contacted an organisation and the services they received. Without a unique identifier it may not be possible to determine how many individuals came into contact with the organisation and the number of times they required assistance.
The ‘Linkage Key’ is typically formed from characters in a person’s name, date of birth and sex (see existing classification below for example). This key is also used for linking across data systems to identify common persons. However a linkage key should only be activated across data systems with appropriate approvals and compliance with Privacy Acts.
RELATED DATA COLLECTION STANDARDS:
AIHW – METeOR – Record – Linkage Key
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