Frequencies for first 10,000 rows of prdiag1 variable in nhamcsopd2006 dataset :

   for dx1, is |
this probable, |
 questionable, |
   or ruleout? |      Freq.     Percent        Cum.
---------------+-----------------------------------
            No |      9,857       98.57       98.57
           Yes |         80        0.80       99.37
Not applicable |         63        0.63      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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