Frequencies for first 10,000 rows of prdiag2 variable in nhamcsopd2006 dataset :

   for dx2, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            No |      4,842       48.42       48.42
           Yes |         91        0.91       49.33
Not applicable |      5,067       50.67      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016