Frequencies for first 10,000 rows of prdiag3 variable in nhamcsed2014 dataset :

 For diagnosis |
    3, is this |
     probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
Not applicable |      7,403       74.03       74.03
            No |      2,553       25.53       99.56
           Yes |         44        0.44      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017