Theatre Case are classified by whether the visit to the OPERATING THEATRE occurred 'during' or 'outside' a scheduled session. A Theatre Case is considered 'during' if it was carried out during a period of time allocated to a scheduled Operating Theatre Session and by a member of a CONSULTANT firm of the same TREATMENT FUNCTION as that allocated to the session. Note that a scheduled Operating Theatre Session may overrun. (See definition of Operating Theatre Session).

A Theatre Case is 'outside' a scheduled Operating Theatre Session if it is not 'during'.

This attribute is also known by these names:

Context	Alias
plural	SCHEDULED SESSIONS DURING OR OUTSIDE