Frequencies for first 10,000 rows of drug8cl2 variable in nhamcsopd2004 dataset :

        drug class #2 for medication #8 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                              diuretics |          4        0.04        0.04
               calcium channel blockers |          2        0.02        0.06
                          beta blockers |          4        0.04        0.10
           alpha agonist/alpha blockers |          3        0.03        0.13
                 disorders, acid/peptic |          1        0.01        0.14
                      vitamins/minerals |          3        0.03        0.17
                   dermatologics, misc. |          1        0.01        0.18
                     topical analgesics |          3        0.03        0.21
ocular anti-infective/anti-inflammatory |          4        0.04        0.25
              miscellaneous ophthalmics |          1        0.01        0.26
       vertigo/motion sickness/vomiting |          8        0.08        0.34
                         antiarthritics |         13        0.13        0.47
                                  nsaid |          8        0.08        0.55
                           antipyretics |          6        0.06        0.61
                          antimalarials |          1        0.01        0.62
         antiasthmatics/bronchodilators |          1        0.01        0.63
   antitussives/expectorants/mucolytics |          3        0.03        0.66
                         antihistamines |          1        0.01        0.67
                                      . |      9,933       99.33      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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