AggregationType
---------------

Describes the aggregation method and the variables used in the aggregation process. Identifies the method using an external controlled vocabulary and identifies the variables used either in-line or by reference to an existing description.

Properties
~~~~~~~~~~

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

   "AggregationMethod",":doc:`/composite-types/CodeValueType/index`","0..1","Identification of the type of aggregation method used. Supports the use of a controlled vocabulary. DDI strongly recommends the use of a controlled vocabulary. The DDI Alliance has provided a controlled vocabulary (AggregationMethod) to support this element at http://www.ddialliance.org/controlled-vocabularies."
   "AggregationVariables",":doc:`/composite-types/AggregationVariablesType/index`","0..1","Identifies the independent and dependent variables used in the aggregation process in-line."
   "AggregationVariablesReference",":doc:`/composite-types/AggregationVariablesType/index`","0..1","A reference to an existing AggregationVariables description."


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

* :doc:`/item-types/GenerationInstruction/index`

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