A set of entities (personnel, material, or places) to be considered together. May be a pool of like-type resources, a team, or combination of personnel, material and places.

If the ActiveFlag is false, it indicates the record or item is no longer to be used and should generally be hidden for the user in the UI.

The most specific code (lowest level term) describing the kind or sort of thing being represented.

A distinguishing word or group of words naming an item.

True if the group is an actual group (as opposed to definitional).

An inclusion or exclusion criterion as part of defining a cohort. If the criterion is an unary, then TopicCode must be SCT#385432009 (not applicable)

A person or entity in a group.

The number of items (0 or more), as an integer.