Frequencies for first 10,000 rows of prdiag2 variable in nhamcsed2001 dataset :

   is diag2 |
  probable, |
questionabl |
      e, or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,360       33.60       33.60
          1 |        280        2.80       36.40
          8 |      6,360       63.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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