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The AnalysisSet class is used in the reporting event's analysisSets attribute to specify the analysis sets, or subject populations, that are defined in the statistical section of the protocol , or the SAP, and identify the sets of subjects whose data are to be included in the main analyses. As described in the DataSubset section, the DataSubset class is used to specify any other subsets of subjects or data that are to be included in analyses, but where the subset is not considered to be a defined analysis set. Once an analysis set has been defined in the reporting event's analysisSets attribute, it can be used for any analysis by specifying its identifier value in the analysisSetId attribute of the instance of the Analysis class that represents the analysis, as described in the Analysis section.
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