Frequencies for first 10,000 rows of prdiag1 variable in nhamcsopd2005 dataset :

   for dx1, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            no |      9,810       98.10       98.10
           yes |         88        0.88       98.98
not applicable |        102        1.02      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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