Copy your case function expression to the clipboard.
Create a text field and put it on a layout so you can put the cursor into it.
Show All Records
Select Replace Field Contents, select the calculation option and paste your case function into it.
Do the replace and you can now format the field as radio buttons and the radio buttons will show as selected so long as the text put in the field exactly matches text in the value list defined for the radio button format.
Create the new field, make it type text. Find all the records marked with an X in AgeCalc 19-29. Set the first one to be '19-29' (no quotation marks, obviously) in the Age Field. Leave the cursor in the field and choose Replace Field Contents, Replace with current contents. Repeat for the other values.
Just remembered an even simpler solution.
Take your existing calculation field with the Case Function.
Change it to a field of type text.
And you are done.
Wow! Such a simple solution... worked like a charm!
Thanks a ton for helping this noob sludge his way through this!