Frequencies for first 10,000 rows of drug6cl2 variable in nhamcsed2003 dataset :

        drug class #2 for medication #6 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          3        0.03        0.03
                antihypertensive agents |          1        0.01        0.04
                              diuretics |          3        0.03        0.07
                          beta blockers |          1        0.01        0.08
           alpha agonist/alpha blockers |          3        0.03        0.11
repl/regs of electrolytes/water balance |          2        0.02        0.13
                   dermatologics, misc. |          1        0.01        0.14
          skeletal muscle hyperactivity |          2        0.02        0.16
         antineoplastics, miscellaneous |          1        0.01        0.17
              miscellaneous ophthalmics |          3        0.03        0.20
       vertigo/motion sickness/vomiting |         21        0.21        0.41
                   analgesics, narcotic |          5        0.05        0.46
               analgesics, non-narcotic |          1        0.01        0.47
                         antiarthritics |         13        0.13        0.60
                                  nsaid |          7        0.07        0.67
                           antipyretics |         11        0.11        0.78
                         antiprotozoals |          1        0.01        0.79
   antitussives/expectorants/mucolytics |          2        0.02        0.81
                    pharmaceutical aids |         15        0.15        0.96
                                      . |      9,904       99.04      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016