Frequencies for first 10,000 rows of drug_rec_act variable in reac2018q4 dataset :

                           drug_rec_act |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      9,989       99.89       99.89
                         Conjunctivitis |          3        0.03       99.92
                Dermatitis psoriasiform |          1        0.01       99.93
                              Diarrhoea |          1        0.01       99.94
                 Hepatic encephalopathy |          1        0.01       99.95
                  Lacrimation increased |          1        0.01       99.96
                                 Oedema |          1        0.01       99.97
                     Pulmonary embolism |          1        0.01       99.98
                                Pyrexia |          1        0.01       99.99
                               Vomiting |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Mar 2019