Frequencies for first 10,000 rows of form2 variable in namcs1999 dataset :

         is |
 medication |
  #2 from a |
  formulary |
      list? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        577        5.77        5.77
          1 |        908        9.08       14.85
          2 |      2,137       21.37       36.22
          3 |      6,378       63.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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