Frequencies for first 10,000 rows of prdiag2 variable in namcs2006 dataset :

   for dx2, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      5,137       51.37       51.37
           yes |        125        1.25       52.62
not applicable |      4,738       47.38      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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