Frequencies for first 10,000 rows of prdiag3 variable in namcs2015 dataset :

         Is |
  diagnosis |
         #3 |
  probable, |
questionabl |
  e or rule |
       out? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -7 |      5,844       58.44       58.44
          1 |         24        0.24       58.68
          2 |      4,132       41.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017