Frequencies for first 10,000 rows of med22 variable in nhamcsed2014 dataset :

                          Medication 22 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,986       99.86       99.86
                               ATROVENT |          1        0.01       99.87
                                BACTRIM |          1        0.01       99.88
                                 CEFTIN |          1        0.01       99.89
                                 COLACE |          1        0.01       99.90
                          DEXAMETHASONE |          1        0.01       99.91
                               LACTINEX |          1        0.01       99.92
                             MYCOSTATIN |          1        0.01       99.93
                              PHENERGAN |          1        0.01       99.94
                        SODIUM CHLORIDE |          1        0.01       99.95
                               THEO-DUR |          1        0.01       99.96
                            CEFTRIAXONE |          1        0.01       99.97
                              VALPROATE |          1        0.01       99.98
                                  ZOSYN |          1        0.01       99.99
                               TRAMADOL |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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