Frequencies for first 10,000 rows of prdiag3 variable in nhamcsopd2005 dataset :

   for dx3, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      2,282       22.82       22.82
           yes |         41        0.41       23.23
not applicable |      7,677       76.77      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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