Question pretext
If less than 1 month, record '00'.
If answer is “12 months” or “1 year”, probe to determine if net was treated exactly 12 months ago or earlier or later.
Question post text
If less than 1 month, record '00'.
If answer is "12 months" or "1 year", probe to determine if net was treated exactly 12 months ago or earlier or later.