Table 2. The quasi-identifiers and how they were modified to ensure a low risk of re-identification.

Variable	Generalizations
Date	Converted to month format
FSA	Forward Sortation Area, which is the first three characters of the postal code
Conditions	Medical conditions diagnosed
age_1	Age categories: <26, 26–44, 45–64, >65
travel_outside_canada	Travel outside Canada in the last 14 days (binary)
Ethnicity
Sex
tobacco_usage
travel_work_school
covid_results_date	Converted to month format
people_in_household	Removed