Use the Select > and < Remove to identify the data columns to use as sort keys for the NCA.
Click Next in the NCA Keys Selection page to move to the Dosing page.
Typically, new variables are created only when needed NCA sort variables are not part of the PC domain and are not present in the source data. Using the New Variable button, new columns can be added and the associated data entered for each profile. The information is added to the PC Result worksheet.
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Click the New Variable button at the bottom of the NCA Key Selection page.
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In the dialog, enter the name of the new variable in the last column’s header field.
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Click + next to the field. (The icon turns to an X and can be used to remove the newly added variable.)
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Add the data for the variable to the cells in the column.
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Click OK to add the variable to the mapping page.
The variable will be added as a new row and placed alphabetically in the list. It can be set as an NCA Sort variable using the 
button. Use the X icon to remove it from the variable list.
Note:Variables added in this way are not saved to the SQLite database. They are study-specific.
