Frequencies for first 10,000 rows of prdiag3 variable in nhamcsed2004 dataset :

      is diag3 |
     probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      1,497       14.97       14.97
           yes |         70        0.70       15.67
not applicable |      8,433       84.33      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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