Frequencies for first 10,000 rows of drug_rec_act variable in reac2017q1 dataset :

                           drug_rec_act |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      9,990       99.90       99.90
         Altered state of consciousness |          1        0.01       99.91
                  Anaphylactic reaction |          1        0.01       99.92
             Application site infection |          1        0.01       99.93
                                 Chills |          1        0.01       99.94
                       Device expulsion |          1        0.01       99.95
                           Oesophagitis |          1        0.01       99.96
                           Pericarditis |          1        0.01       99.97
                              Pneumonia |          1        0.01       99.98
                                   Rash |          1        0.01       99.99
             Toxicity to various agents |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Sep 2017