Frequencies for first 10,000 rows of prdiag3 variable in nhamcsopd2001 dataset :

   is diag3 |
  probable, |
questionabl |
      e, or |
   ruleout? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,112       21.12       21.12
          1 |         68        0.68       21.80
          8 |      7,820       78.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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