DataCollectionFrequencyType
---------------------------

Documents the intended frequency of data collection, for example monthly, yearly, weekly, etc., preferably using an optional controlled vocabulary in the IntendedFrequency element. Date of first collection should be provided in StartDate as a basis for defining periodicity. EndDate should be entered for data collection cycles with a known or anticipated end date. EndDate is omitted in data collection series that are intended to be on-going.

Properties
~~~~~~~~~~

.. csv-table::
   :header: "Name","Type","","Description"
   :widths: 15,10,5,100

   "IntendedFrequency",":doc:`/composite-types/CodeValueType/index`","0..1","Documents the intended frequency of data collection, for example monthly, yearly, weekly, etc., preferably using an optional controlled vocabulary."

Properties Inherited from DateType
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. csv-table::
   :header: "Name","Type","","Description"
   :widths: 15,10,5,100

   "SimpleDate","cogsDate","0..1","A single point in time. If a duration is expressed as a SimpleDate it is defining a period of time without a designated Start or End date."
   "HistoricalDate",":doc:`/composite-types/HistoricalDateType/index`","0..1","A simple date expressed in a historical date format, including a specification of the date format and calendar used."
   "StartDate","cogsDate","0..1","Start of a date range. If there is a start date with no end date provided, this implies that the end date is unknown but that the date being recorded is not just a simple date but a range of unknown duration."
   "HistoricalStartDate",":doc:`/composite-types/HistoricalDateType/index`","0..1","A start date expressed in a historical date format, including a specification of the date format and calendar used."
   "EndDate","cogsDate","0..1","End of a date range with a known start date."
   "HistoricalEndDate",":doc:`/composite-types/HistoricalDateType/index`","0..1","An end date expressed in a historical date format, including a specification of the date format and calendar used."
   "Cycle","int","0..1","Use to indicate occurrence of this range within a series of ranges as an integer identifying the cycle, i.e. the 4th wave of a data collection cycle would have 4."


Item Type Hierarchy
~~~~~~~~~~~~~~~~~~~

* :doc:`/composite-types/DateType/index`
    * **DataCollectionFrequencyType**


Relationships
~~~~~~~~~~~~~
The following types reference this type.

* :doc:`/composite-types/CollectionEventType/index`

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.. |stub| image:: ../../images/DataCollectionFrequencyType.svg