2080.5 - Information Paper: Australian Census Longitudinal Dataset, Methodology and Quality Assessment, 2006-2011
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 18/12/2013
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3.1.2 CONSISTENCY OF COMMON INFORMATION ON RECORD PAIRS TABLE 4 - CONSISTENCY OF LINKED RECORDS, By geography and selected linking fields
Just over 97% of all records that were matched in the ACLD linkage process agreed on small to medium levels of geographic area combined with other key linking fields, such as age, sex and date of birth. While the number of consistent fields can give a strong indication of likely linkage quality, other factors should be taken into account, for example, the expected number of people in a geographic area that are likely to share a characteristic by chance. A tolerance of plus or minus two years was used at certain parts of the linkage process to cater for persons who may have understated their age in 2006 and overstated it in 2011 or vice versa. By contrast, record pairs may have inconsistent information and yet be a true link. Inconsistent information may be recorded for the same person in different Censuses due to a range of factors, including:
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