Frequencies for first 10,000 rows of drug5cl2 variable in nhamcsed2004 dataset :

        drug class #2 for medication #5 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          1        0.01        0.01
                  antiarrhythmic agents |          7        0.07        0.08
                              diuretics |          4        0.04        0.12
               calcium channel blockers |          5        0.05        0.17
                          beta blockers |          4        0.04        0.21
           alpha agonist/alpha blockers |          4        0.04        0.25
                      vitamins/minerals |          1        0.01        0.26
                          immune serums |          1        0.01        0.27
                     topical analgesics |          5        0.05        0.32
          skeletal muscle hyperactivity |          5        0.05        0.37
                cycloplegics/mydriatics |          1        0.01        0.38
ocular anti-infective/anti-inflammatory |          1        0.01        0.39
              miscellaneous ophthalmics |          3        0.03        0.42
       vertigo/motion sickness/vomiting |         30        0.30        0.72
                   analgesics, narcotic |          4        0.04        0.76
                         antiarthritics |         16        0.16        0.92
                                  nsaid |         11        0.11        1.03
                           antipyretics |         27        0.27        1.30
                          antimalarials |          1        0.01        1.31
   antitussives/expectorants/mucolytics |          7        0.07        1.38
                         antihistamines |          3        0.03        1.41
                    pharmaceutical aids |         17        0.17        1.58
                                      . |      9,842       98.42      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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