Frequencies for first 10,000 rows of role_cod variable in drug2014q3 dataset :

   Code for |
     drug's |
   reported |
    role in |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          C |      5,658       56.58       56.58
          I |         78        0.78       57.36
         PS |      1,597       15.97       73.33
         SS |      2,667       26.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2017