A data extract can be de-identified using the De-identify tool menu option within CAT. You must load the data set you wish to de-identify before running the tool. This process removes all patient information but age in years, gender and ethnicity from the CAT data. All clinical information is still available for analysis.
Click Tools > De-identify Dataset
You will receive a confirmation message once the process had completed
The new de-identified dataset will appear in your list of extracts