Frequencies for first 10,000 rows of prdiag2 variable in namcs1999 dataset :

   is diag2 |
  probable, |
questionabl |
       e or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,493       44.93       44.93
          1 |        118        1.18       46.11
          2 |      5,389       53.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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