Frequencies for first 10,000 rows of drug8cl2 variable in nhamcsopd2003 dataset :

        drug class #2 for medication #8 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          2        0.02        0.02
                   anesthetics, topical |          1        0.01        0.03
                              diuretics |          3        0.03        0.06
                          beta blockers |          4        0.04        0.10
           alpha agonist/alpha blockers |          5        0.05        0.15
                 disorders, acid/peptic |          1        0.01        0.16
        antispasmodics/anticholinergics |          1        0.01        0.17
                      vitamins/minerals |          1        0.01        0.18
                          immune serums |          1        0.01        0.19
                     topical analgesics |          1        0.01        0.20
          skeletal muscle hyperactivity |          2        0.02        0.22
                cycloplegics/mydriatics |          1        0.01        0.23
       vertigo/motion sickness/vomiting |         10        0.10        0.33
                         antiarthritics |         26        0.26        0.59
                                  nsaid |          9        0.09        0.68
                           antipyretics |          5        0.05        0.73
                         antiprotozoals |          1        0.01        0.74
         antiasthmatics/bronchodilators |          2        0.02        0.76
        corticosteroid-inhalation/nasal |          2        0.02        0.78
                                      . |      9,922       99.22      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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