Frequencies for first 10,000 rows of prdiag1 variable in nhamcsed2000 dataset :

   is diag1 |
  probable, |
questionabl |
       e or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,736       97.36       97.36
          1 |        155        1.55       98.91
          2 |        109        1.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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