Administrators can mark columns as either non-PHI, PHI, Limited, or Restricted. This column metadata is used to control user access in a given application. Administrators may control the PHI metadata assignments without actually viewing the data in the columns.

You can assign PHI level to columns using two different methods:

  • Use the LabKey user interface
  • Use XML metadata

Using XML Metadata

You can mark columns as PHI in the schema definition XML file.

In the example below, the column DeathOrLastContactDate has been marked as "Limited":

<column columnName="DeathOrLastContactDate">
<formatString>Date</formatString>
<phi>Limited</phi>
</column>

Possible values are:

  • NotPHI
  • Limited
  • PHI
  • Restricted
The default value is NotPHI.

Custom modules can implement special Java class handlers of PHI levels.

PHI XML Reference: https://www.labkey.org/download/schema-docs/xml-schemas/schemas/tableInfo_xsd/elements/phi.html

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