Frequencies for first 10,000 rows of med28 variable in namcs2014 dataset :

                         Medication #28 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,988       99.88       99.88
                             INDERAL LA |          1        0.01       99.89
                                ABILIFY |          1        0.01       99.90
                              SYMBICORT |          1        0.01       99.91
                             KAYEXALATE |          1        0.01       99.92
                      ALBUTEROL SULFATE |          1        0.01       99.93
                            ONDANSETRON |          1        0.01       99.94
                              ZITHROMAX |          1        0.01       99.95
                            SIMVASTATIN |          1        0.01       99.96
                            FLUNISOLIDE |          1        0.01       99.97
                                  NSAID |          1        0.01       99.98
                                 ULTRAM |          1        0.01       99.99
                GLUCOSAMINE CHONDROITIN |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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