The COVID-19 Register is a linked data asset that enables evidence-based research, and public health and health system planning for current and future pandemics. This linkage project also facilitates selected information to be fed back and incorporated into the local notifiable disease systems of states and territories to improve data completeness and utility.
The first version of the COVID-19 Register was made available to approved researchers in December 2022. The linked data has since been updated with expanded coverage over time, through Version 2, Version 2.5 and now Version 2.6.
The purpose of this report is to briefly describe the linkage method and process, and compare high level linkage results for previous and current versions of the COVID-19 Register. This report will be a resource for future researchers wanting to use the data.
- Cat. no: PHE 328
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The COVID-19 Register has been expanded in coverage to include over 9 million linked COVID-19 cases
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Linkage rates for Version 2.6 were similar to Version 2.5, with over 90% of records linked
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In Version 2.6, linkage rates continue to differ slightly by jurisdictions and population groups
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There are 2 million more cases in Version 2.6 compared with Version 2.5, due to extra time periods being included