Frequencies for first 10,000 rows of prdiag3 variable in nhamcsopd1997 dataset :

   is diag3 |
  probable, |
questionabl |
       e or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,402       14.02       14.02
          1 |         60        0.60       14.62
          2 |      8,538       85.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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