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Analysis Dataset Specifications list standard ADaM variables and define the required characteristics of standard variables (columns) that are frequently needed in ADaM datasets. The ADaM standard requires that these variable names be used when a variable that contains the content defined in ADD LINK Section 2.9.4 is included in any ADaM dataset, regardless of dataset class. It also requires these ADaM standard variables be used for the purposes indicated, even if the content of an ADaM variable is a copy of the content of an SDTM dataset variable.

Currently ADaM has three structures: ADSL, BDS, and OCCDS, which correspond to the SUBJECT LEVEL ANALYSIS DATASET, BASIC DATA STRUCTURE, and OCCURRENCE DATA STRUCTURE classes of ADaM datasets. Analysis datasets that follow the ADaM fundamental principles and other ADaM conventions, but which do not follow one of the three defined structures (ADSL, BDS, OCCDS), are considered to be ADaM datasets with a class of ADAM OTHER. 

The columns in an ADaM dataset specification table are:

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