EclecticSE SLK-581 Code Library

The SLK-581 is a fourteen character statistical linkage code used by Australian Government departments.

SLK-581 Algorithm

The code is composed of the ordered concatenation of the following four data elements related to a person:

1. 2nd, 3rd and 5th letters of last name (family name).

2. 2nd and 3rd letters of first (given) name.

3. The date of birth as a character string in the form DDMMYYYY.

4. The sex of the client as:

   • Code "1" for Male
   • Code "2" for Female
   • Code "3" for Other, "intersex" or "indeterminate"
   • Code "9" for Unknown, not stated or inadequately described

Additional Notes

• Characters not counted are hyphens, apostrophes, blank spaces, or any other character which is not a letter of the alphabet, that may appear in a name.

• Where the name is not long enough to supply all the required letters, fill the remaining places with a 2 to indicate that a letter does not exist. This will occur if the first name is less than 3 characters and if the last name is less than 5 characters.

• Where a name or part of a name is missing, substitute a 9 to indicate that the letter is unknown.

• Use uppercase letters only for SLK.

Licence

LLGPL