Frequencies for first 10,000 rows of med23 variable in nhamcsed2015 dataset :

                         Medication #23 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,980       99.80       99.80
                 ISOSORBIDE MONONITRATE |          1        0.01       99.81
                   TOLTERODINE TARTRATE |          1        0.01       99.82
                              ERTAPENEM |          1        0.01       99.83
                              CLONIDINE |          1        0.01       99.84
                                IOHEXOL |          1        0.01       99.85
                               ZOLPIDEM |          1        0.01       99.86
                              IV FLUIDS |          1        0.01       99.87
                             OXYBUTYNIN |          1        0.01       99.88
                                FOLVITE |          1        0.01       99.89
                       MILK OF MAGNESIA |          1        0.01       99.90
                               MORPHINE |          1        0.01       99.91
                                  SENNA |          1        0.01       99.92
                                SENOKOT |          2        0.02       99.94
                              TRAZODONE |          1        0.01       99.95
                                 ZOFRAN |          1        0.01       99.96
                                ALBUMIN |          1        0.01       99.97
                                  ZOCOR |          1        0.01       99.98
                               CLARITIN |          1        0.01       99.99
              ACETAMINOPHEN-HYDROCODONE |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017