Frequencies for first 10,000 rows of form6 variable in namcs1998 dataset :

         is |
 medication |
  #6 from a |
  formulary |
      list? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         79        0.79        0.79
          1 |         54        0.54        1.33
          2 |        223        2.23        3.56
          3 |      9,644       96.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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