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Excerpt IncludeER Diagram: DataSubsetER Diagram: DataSubsetAny The DataSubset class, which is a specialization of the WhereClause class, is used in the reporting event's dataSubsets attribute to specify any defined data subsets that are used to restrict the records that are included in any given analysis (e.g., inclusion of only treatment-emergent adverse events in an AE summary analysis).

Each data subset is defined using the “DataSubset” class.as an instance of the DataSubset class, in which:

• The id attribute contains the assigned identifier value for the data subset.
• The label attribute contains a short description for the data subset (e.g., "Treatment-Emergent Adverse Events").
• The level and order attributes are both assigned a value of "1".
• Either:
  • The condition attribute contains the definition of a simple data selection criterion represented as an instance of the WhereClauseCondition class, as described in the WhereClauseCondition section.

Or:

• • The compoundExpression attribute contains the definition of a compound expression represented as an instance of the CompoundSetExpression class, in which:
    • The logicalOperator attribute contains a value from the ExpressionLogicalOperatorEnum enumeration.
    • The whereClauses attribute contains 1 or more other sub-clauses, each represented as an instance of the WhereClause class.

Refer to the WhereClauseCompoundExpression section for more information about compound expressions, including an example of a data subset defined as a compound expression.