In the table neuropat
are seven fields
about the state of a patient which can only
be empty, y, or n. For each quarter and each year,
the share of patients that have a y compared to the number of
patients who have the appropriate fields filled out -- in other words
empty fields have to be ignored -- is determined. The five areas
checked are impaired pain, or perception of vibrations at the feet,
postural hypotension, postural neuropathy, and erectile impotence.