Specify masking attributes for a column

If you selected a blinding type of Column for a table, at least one of the columns in the table must be masked.

1. Click the Study Configuration icon from the navigation bar. Then click the Clinical Data Models tab.

2. Select the model and click Check Out.

3. Select the table.

4. Select the column and click the Modify icon. In the Modify Clinical Data Model Column window, select the Blinding Attributes tab.

5. Select a Masking Level:

   • Cell: Masks the real data only in certain rows in this column.

   • Column: Masks the real data in this column in every row.

   • None: No rows are masked in this column.

6. Masking Value: Do one of the following to specify what values to display instead of the real values:

   • Enter a constant value to be displayed in every row.

     Tip:

     Enclose the value in single quotes.

     The default masking values are: xxxxx for text, 99999 for numbers, and 15 aug 3501 for dates.

   • Click the Modify Masking Value icon to create an expression to generate multiple values for the system to display; see Use the Expression Builder for details.

7. Masking Criteria (for cell-level masking): Click the Modify Masking Criteria icon to specify the criteria for blinding cells in the column; see Use the Expression Builder for details.

Back to Set up clinical data models