Frequencies for first 10,000 rows of prdiag2 variable in nhamcsopd2005 dataset :

   for dx2, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      4,953       49.53       49.53
           yes |        102        1.02       50.55
not applicable |      4,945       49.45      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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