Frequencies for first 10,000 rows of prdiag2 variable in namcs1997 dataset :

   is diag2 |
  probable, |
questionabl |
       e or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,428       44.28       44.28
          1 |        138        1.38       45.66
          2 |      5,434       54.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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