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To use standards for collection and tabulation, compare the nature or role of the data to the scope of a domain. Domain names provide short descriptions of intended scope and may be used to narrow down which domains to consider.  A domain standard may be used when the nature of the data and the domain scope are aligned. Observations will be collected using collection standards and represented as rows in tabulation datasets. Each observation is described by a series of data points which correspond to data collection fields and columns in a tabulation dataset.

Fields and variables may be used when 

To use standards for analysis, 

Observations are described using collection and tabulation variables. 

are used to design customized datasets is cucustomizable per analysis requirements.

Analysis needs drive the selection of analysis standards, where analysis requirements are supported by both the structure and the contents of the resulting dataset. 

further drives the selection of collection and tabulation standards, where the nature of the data must be within the scope of a domain for the domain to be used. Analysis needs drive the selection of analysis standards, where analysis requirements are supported by both the structure and the contents of the resulting dataset. Standards for data exchange are applicable to all use cases and support sharing of standard CRFs, tabulation datasets, and analysis datasets.

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• Groups logically related data in domains 
• Domains are aligned

A data collection field and/or tabulation variable may be used when the subject matter of a data point and the scope of a field and/or variable are aligned.

To use standards for analysis, 

Standards for collection and tabulation group logically related data in domains while  All standards are designed to flow together - The table below describes 

The logic of the relationship may pertain to the scientific subject matter of the data or to its role in the trial. 

Domains