Frequencies for first 10,000 rows of med27 variable in nhamcsed2014 dataset :

                          Medication 27 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                          NO ENTRY MADE |      9,996       99.96       99.96
                               PROTONIX |          1        0.01       99.97
                              ALDACTONE |          1        0.01       99.98
                          NITROGLYCERIN |          1        0.01       99.99
                                  K-DUR |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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