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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 NameDurationTimingConstraint
Parent Element(s)StudyTiming
Element XPath(s)
  • /ODM/Study/MetaDataVersion/Protocol/StudyTimings/StudyTiming/RelativeTimingConstraint
Element Textual ValueNone
AttributesOID, Name, StruturalElementOID, DurationTarget, DurationPreWindow, DurationPostWindow
Child Elements(Description?)
Usage/Business Rules


AttributeSchema Datatype or EnumerationUsageDefinitionBusiness Rule(s)
OIDoidRequiredUnique identifier.Must be unique within the Study.
NamenameRequiredHuman readable name for the DurationTimingConstraint.Must be unique within the set of timing constraints for the Study.
StructuralElementOIDoidrefRequiredOID of a structural element such as a Study, Epoch, StudyEventGroup, StudyEvent, ItemGroup, ItemMust match the OID for Study, Epoch, StudyEventGroupDef, StudyEventDef, ItemGroupDef or ItemDef. element.
DurationTargetdurationDatetimeRequired

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.

Must be a non-negative ISO 8601 duration.
DurationPreWindowdurationDatetimeOptionalDefines the amount of time by which the targetted duration may be reduced.Must be a non-negative ISO 8601 duration.
DurationPostWindowdurationDatetimeOptionalDefines 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
<DurationTimingConstraint​ OID="DTC-ODMV2-EX" Name="VISIT2 Duration Timing Constraint" 
    StructuralElementOID="SEG.VIS2" DurationTarget="P6D" DurationPreWindow="P1D" DurationPostWindow="P2D" />



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