Frequencies for first 10,000 rows of role_cod variable in drug2016q3 dataset :

   Code for |
     drug's |
   reported |
    role in |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          C |      5,513       55.13       55.13
          I |         46        0.46       55.59
         PS |      1,363       13.63       69.22
         SS |      3,078       30.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017