Table 3. Example of Minimization Assignment.

Two-Arm Equal-Allocation Trial with Three Covariates

For the 23^rd Subject (Male, Age Group ≥60, Site #2)

First 22 subjects’ allocation in each baseline covariate category								Sum of Subjects in associated categories	Treatment Assignment
Arm	Sex		Age Group		Clinical Site
	Female	Male	<60	≥60	Site #1	Site #2	Site #3
Active	7	5	3	8	4	5	3	18	←
Control	4	6	2	9	4	4	2	19