Frequencies for first 10,000 rows of prdiag3 variable in nhamcsed2003 dataset :

      is diag3 |
     probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      1,385       13.85       13.85
           yes |         74        0.74       14.59
not applicable |      8,541       85.41      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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