During a study, there
might not be an appropriate domain template for the domain that you
want to create. In this case, you can create a custom domain. The
custom domain uses the data model defined by the data standard to
create the appropriate columns and metadata.
For example, SDTM defines
a data model that is based on creating domains from groups of columns,
specifically identifiers, interventions, events, findings, and timings.
SAS Clinical Data Integration generalizes the concept of grouping
columns with the term
column group. A column group makes up a portion of a complete table.
Note: To create a custom domain,
the data standard must have column groups.
The key criterion for
creating a custom domain is whether it is meant to hold data for interventions,
events, or findings. In SAS Clinical Data Integration, interventions,
events, or findings are considered
conditional column groups. You can select only one
conditional column group per custom domain.
In addition to selecting
a conditional column group, you must specify identifiers and timing.
You must also select the individual columns that you want to include
in the custom domain. Some column names must be prefixed with the
identifier. If you select a column that has this requirement, SAS
Clinical Data Integration automatically creates the correct column
name with the prefix. You can define keys and set the column order
before the domain is created.
You can
also create a custom domain based on an existing domain. Select an
existing domain that most closely satisfies your needs, duplicate
it, and then modify it as needed.