Permissible Values and Permitted Value Groups

Permissible Values

A permissible value (PV) is just a single allowed value that comprises part of a value range.

Examples

If the associated value range was intended to be a size range then examples might be

• small
• medium
• large

In the GUI, individual permissible values will appear as selectable options in a drop down list.

Permitted Value Group

A permitted value group (PVG) is a set of permissible values. A PVG must be defined first, with PVs then defined and assigned to a PVG. PVGS are defined by navigating to “Permissible Value Groups” under “Admin Page”.

Click “Add” to create a new PVG.

A value group has a code which must be a unique non blank string value.

Once a permitted value group has been created, add permissible values to it.

Examples

The decoupling of permitted value groups from cdes that make use of them allows different attributes

(e.g. shoe size , hat size) to share the same value ranges (E.g. small, medium, large) as is done in NINDS http://www.commondataelements.ninds.nih.gov )