The element AbsoluteTimingConstraint is used to specify when an activity, represented by either a StudyEventGroup or StudyEvent, can take place.
| Element Name | AbsoluteTimingConstraint |
|---|---|
| Parent Element(s) | StudyTiming |
| Element XPath(s) |
|
| Element Textual Value | None |
| Attributes | OID, Name, (StudyEventGroupOID|StudyEventOID), TimepointTarget, TimepointPreWindow, TimepointPostWindow |
| Child Elements | (Description?) |
| Usage/Business Rules |
| Attribute | Schema Datatype or Enumeration | Usage | Definition | Business Rule(s) |
|---|---|---|---|---|
| OID | oid | Required | Unique identifier. | |
| Name | name | Required | Human readable name. | |
StudyEventGroupOID | oidref | Optional | Reference to StudyEventGroup definition element. | |
| StudyEventOID | oidref | Optional | Reference to StudyEvent definition element. | |
| TimepointTarget | (date, time, datetime, partialDate, partialTime, partialDatetime) | Required | Specifies the targetted date, time, or datetime. |
Note it can be incomplete date/datetime; for example: if the activity is planned to be at 9:00 am, the value for TimepointTarget may be expressed as "-----T09". |
| TimepointPreWindow | durationDatetime | Optional | Specifies the amount of time before the TimepointTarget that the activity may be started. |
|
| TimepointPostWindow | durationDatetime | Optional | Specifies the amount of time after the TimepointTarget that the activity can be started. |
|
The value for TimepointTarget can be a complete date, a datetime, a partial date, or an incomplete or partial date/datetime. For example, if the activity is planned to be at 9am, the value for TimepointTarget may be expressed as "-----T09".
The TimepointPreWindow describes the amount of time before the TimepointTarget that the activity may be started. It is expressed as an ISO 8601 duration.
The TimepointPostWindow describes the amount of time after the TimepointTarget that the activity can be stared. It is expressed as an ISO 8601 duration.
Example
<AbsoluteTimingConstraint OID="TEMP_MEASUREMENT_TIME" Name="Timing constraint for taking the morning temperature" StudyEventGroupOID="IG.TEMP_MEASUREMENT"
TimepointTarget="09:00" TimepointPreWindow="PT5M" TimepointPostWindow="PT30M">
<Description>
<TranslatedText xml:lang="en" Type="text/plain">The temperature of the subject must be measured at 9:00 AM in the morning, with a time window of 5 minutes before and 30 minutes after</TranslatedText>
</Description>
</AbsoluteTimingConstraint>