Frequencies for first 10,000 rows of prdiag2 variable in nhamcsopd2001 dataset :

   is diag2 |
  probable, |
questionabl |
      e, or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,592       45.92       45.92
          1 |        135        1.35       47.27
          8 |      5,273       52.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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