Frequencies for first 10,000 rows of med25 variable in nhamcsed2014 dataset :

                          Medication 25 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,991       99.91       99.91
                       CHLORDIAZEPOXIDE |          1        0.01       99.92
                                IOHEXOL |          1        0.01       99.93
                            MULTI-DELYN |          1        0.01       99.94
                               KETAMINE |          1        0.01       99.95
                              LACTULOSE |          1        0.01       99.96
                                  LASIX |          1        0.01       99.97
                              METHADONE |          1        0.01       99.98
                             PREDNISONE |          1        0.01       99.99
                                  XANAX |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017