Lets you do cohort analysis based on two strategies: "big", which discards characteristics for the maximum cohort result, and "strict", which discards characteristics in order until a minimum cohort size is reached.
Replaces cohort_scope.
:big- Default. Iteratively discards the characteristic that is most "restrictive," yielding the largest possible cohort. Note that it stops discarding after the minimum cohort size is reached.
:strict- Discards characteristics according to
:priority.
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