Frequencies for first 10,000 rows of drug5cl2 variable in nhamcsed2003 dataset :

        drug class #2 for medication #5 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          6        0.06        0.06
                   anesthetics, topical |          1        0.01        0.07
          sulfonamides and trimethoprim |          1        0.01        0.08
                antihypertensive agents |          3        0.03        0.11
                              diuretics |          3        0.03        0.14
                  coronary vasodilators |          3        0.03        0.17
                          beta blockers |          2        0.02        0.19
           alpha agonist/alpha blockers |          1        0.01        0.20
                 disorders, acid/peptic |          1        0.01        0.21
        antispasmodics/anticholinergics |          1        0.01        0.22
repl/regs of electrolytes/water balance |          1        0.01        0.23
                   estrogens/progestins |          1        0.01        0.24
                         contraceptives |          1        0.01        0.25
                     topical analgesics |          1        0.01        0.26
          skeletal muscle hyperactivity |          5        0.05        0.31
      hormonal/biological response mod. |          1        0.01        0.32
                cycloplegics/mydriatics |          1        0.01        0.33
              miscellaneous ophthalmics |          2        0.02        0.35
       vertigo/motion sickness/vomiting |         23        0.23        0.58
                   analgesics, narcotic |          3        0.03        0.61
               analgesics, non-narcotic |          1        0.01        0.62
                         antiarthritics |         15        0.15        0.77
                                  nsaid |          3        0.03        0.80
                           antipyretics |         24        0.24        1.04
   antitussives/expectorants/mucolytics |          1        0.01        1.05
                         antihistamines |          2        0.02        1.07
                    pharmaceutical aids |         16        0.16        1.23
                                      . |      9,877       98.77      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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