Frequencies for first 10,000 rows of prdiag3 variable in nhamcsed2015 dataset :

 For diagnosis |
    3, is this |
     probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
Not applicable |      7,680       76.80       76.80
            No |      2,294       22.94       99.74
           Yes |         26        0.26      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017