Frequencies for first 10,000 rows of role_cod variable in drug2014q4 dataset :

   Code for |
     drug's |
   reported |
    role in |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          C |      5,547       55.47       55.47
          I |         54        0.54       56.01
         PS |      1,545       15.45       71.46
         SS |      2,854       28.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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