The time when an ACTIVITY PROPERTY became effective for a PATIENT.

Examples may be the time when the PATIENT was at a particular CRITICAL CARE LEVEL or when they started to be supported by a ventilator.

This item is not referenced in a data set in the NHS Data Model and Dictionary. It has been retained to ensure the modelling is consistent.

This attribute is also known by these names:

Context	Alias
plural	ACTIVITY PROPERTY EFFECTIVE TIMES