Frequencies for first 10,000 rows of prdiag2 variable in nhamcsed2002 dataset :

   is diag2 |
  probable, |
questionabl |
      e, or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,509       35.09       35.09
          1 |        236        2.36       37.45
          8 |      6,255       62.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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