Frequencies for first 10,000 rows of prdiag3 variable in namcs2001 dataset :

   is diag3 |
  probable, |
questionabl |
      e, or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,750       17.50       17.50
          1 |         65        0.65       18.15
          8 |      8,185       81.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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