Frequencies for first 10,000 rows of prdiag2 variable in nhamcsed2010 dataset :

   For dx2, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
not applicable |      5,148       51.48       51.48
            no |      4,696       46.96       98.44
           yes |        156        1.56      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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