Frequencies for first 10,000 rows of drug6cl2 variable in nhamcsed2004 dataset :

        drug class #2 for medication #6 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          3        0.03        0.03
                  antiarrhythmic agents |          4        0.04        0.07
                              diuretics |          2        0.02        0.09
               calcium channel blockers |          2        0.02        0.11
                          beta blockers |          3        0.03        0.14
           alpha agonist/alpha blockers |          4        0.04        0.18
                         antidiarrheals |          1        0.01        0.19
        miscellaneous gastrointestinals |          1        0.01        0.20
        antispasmodics/anticholinergics |          1        0.01        0.21
                      vitamins/minerals |          1        0.01        0.22
                          immune serums |          1        0.01        0.23
                   dermatologics, misc. |          1        0.01        0.24
                     topical analgesics |          3        0.03        0.27
          skeletal muscle hyperactivity |          3        0.03        0.30
                cycloplegics/mydriatics |          1        0.01        0.31
ocular anti-infective/anti-inflammatory |          3        0.03        0.34
              miscellaneous ophthalmics |          1        0.01        0.35
       vertigo/motion sickness/vomiting |         15        0.15        0.50
                   analgesics, narcotic |          3        0.03        0.53
                         antiarthritics |         22        0.22        0.75
                                  nsaid |          4        0.04        0.79
                           antipyretics |         20        0.20        0.99
   antitussives/expectorants/mucolytics |          3        0.03        1.02
                         antihistamines |          1        0.01        1.03
        corticosteroid-inhalation/nasal |          1        0.01        1.04
                    pharmaceutical aids |          9        0.09        1.13
                                      . |      9,887       98.87      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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