The DurationTimingConstraint constrains the duration of an activity represented by a study, epoch, StudyEventGroupDef, StudyEventDef, ItemGroupDef, or ItemDef. It is used to constrain the duration of the visit, activity, or any other structural element.
The element may not be used to describe timing constraints between structural elements (e.g., visits), but can be used to described the allowed duration of the visit itself (or any other activity).
Element Name DurationTimingConstraint Parent Element(s) StudyTiming Element XPath(s) Element Textual Value None Attributes OID, Name, StruturalElementOID, DurationTarget, DurationPreWindow, DurationPostWindow Child Elements (Description?) Usage/Business Rules
Constrains the duration of an activity represented by a Study, Epoch, StudyEventGroupDef, StudyEventDef, ItemGroupDef or ItemDef. Specifies the planned duration of the referenced structural element.Attribute Schema Datatype or Enumeration Usage Definition Business Rule(s) OID oid Required Unique identifier. Must be unique within the Study. Name name Required Human readable name for the DurationTimingConstraint. Must be unique within the set of timing constraints for the Study. StructuralElementOID oidref Required OID of a structural element such as a Study, Epoch, StudyEventGroup, StudyEvent, ItemGroup, Item Must match the OID for Study, Epoch, StudyEventGroupDef, StudyEventDef, ItemGroupDef or ItemDef. element. DurationTarget durationDatetime Required Must be a non-negative ISO 8601 duration. DurationPreWindow durationDatetime Optional Defines the amount of time by which the targetted duration may be reduced. Must be a non-negative ISO 8601 duration. DurationPostWindow durationDatetime Optional Defines the amount of time by which the targetted duration may be increased. Must be a non-negative ISO 8601 duration.
Example: DurationTImeConstraint
If a visit is envisaged to take 6 days, with a minimum of 5 days and a maximum of 8 days, then DurationTarget="P6D", DurationPreWindow="P1D", and DurationPostWindow="P2D", with the value of StructuralElementOID being equal to the value of the OID attribute of the visit (StudyEventGroup or StudyEvent) to which the constraint should be applied.
<DurationTimingConstraint OID="DTC-ODMV2-EX" Name="VISIT2 Duration Timing Constraint"
StructuralElementOID="SEG.VIS2" DurationTarget="P6D" DurationPreWindow="P1D" DurationPostWindow="P2D" />