Frequencies for first 10,000 rows of val_vbm variable in drug2017q4 dataset :

   Code for |
  source of |
   DRUGNAME |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,822       98.22       98.22
          2 |        178        1.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Jun 2018