Frequencies for first 10,000 rows of med20 variable in namcs2014 dataset :

                         Medication #20 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,925       99.25       99.25
                                VIACTIV |          1        0.01       99.26
                 ISOSORBIDE MONONITRATE |          1        0.01       99.27
                                   EDEX |          1        0.01       99.28
                            ALLOPURINOL |          1        0.01       99.29
                           VERAPAMIL SR |          1        0.01       99.30
                                ASPIRIN |          2        0.02       99.32
                                 TESTIM |          1        0.01       99.33
                              MELOXICAM |          1        0.01       99.34
                                VELCADE |          1        0.01       99.35
                     TIOTROPIUM BROMIDE |          1        0.01       99.36
                           PRESERVISION |          1        0.01       99.37
                            CHERATUSSIN |          1        0.01       99.38
                                  CIPRO |          1        0.01       99.39
                 FLUTICASONE PROPIONATE |          1        0.01       99.40
                             VITAMIN D3 |          1        0.01       99.41
                                  ALIGN |          1        0.01       99.42
                         CYANOCOBALAMIN |          1        0.01       99.43
                            RESVERATROL |          1        0.01       99.44
                        NOVOLOG FLEXPEN |          1        0.01       99.45
                                RECLAST |          1        0.01       99.46
                                ESTER-C |          1        0.01       99.47
                               FERROSOL |          1        0.01       99.48
                                ECOTRIN |          1        0.01       99.49
                                 EPIPEN |          1        0.01       99.50
                              TRADJENTA |          1        0.01       99.51
                             FUROSEMIDE |          1        0.01       99.52
                               GLUCAGON |          2        0.02       99.54
                          METRONIDAZOLE |          1        0.01       99.55
                           MULTIVITAMIN |          3        0.03       99.58
                                    NTG |          1        0.01       99.59
                              POTASSIUM |          1        0.01       99.60
                             PREDNISONE |          1        0.01       99.61
                              PRIMIDONE |          1        0.01       99.62
                               TOBRADEX |          1        0.01       99.63
                          TRIAMCINOLONE |          1        0.01       99.64
                TRIAMCINOLONE ACETONIDE |          1        0.01       99.65
                                TYLENOL |          1        0.01       99.66
                              VITAMIN E |          1        0.01       99.67
                                   ZINC |          1        0.01       99.68
                    POLYETHYLENE GLYCOL |          1        0.01       99.69
                   INFLUENZA VIRUS VACC |          1        0.01       99.70
                             ALPRAZOLAM |          1        0.01       99.71
                             OMEPRAZOLE |          1        0.01       99.72
                              PRAVACHOL |          1        0.01       99.73
                             BENAZEPRIL |          1        0.01       99.74
                     DOXAZOSIN MESYLATE |          2        0.02       99.76
                             LISINOPRIL |          1        0.01       99.77
               ARTIFICIAL TEAR SOLUTION |          1        0.01       99.78
                              ZITHROMAX |          1        0.01       99.79
                            SIMVASTATIN |          2        0.02       99.81
                             SUCRALFATE |          1        0.01       99.82
                             GABAPENTIN |          1        0.01       99.83
                              METFORMIN |          1        0.01       99.84
                          FLAX SEED OIL |          1        0.01       99.85
                                 ZYRTEC |          1        0.01       99.86
                              MUPIROCIN |          1        0.01       99.87
                               TRAMADOL |          1        0.01       99.88
                                XALATAN |          1        0.01       99.89
                                ALLEGRA |          1        0.01       99.90
                                LIPITOR |          1        0.01       99.91
                                 DIOVAN |          2        0.02       99.93
                                PATANOL |          1        0.01       99.94
                                NASONEX |          1        0.01       99.95
                                  NORCO |          2        0.02       99.97
                            MONTELUKAST |          1        0.01       99.98
                             CITALOPRAM |          1        0.01       99.99
                         ROPINIROLE HCL |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017