Frequencies for first 10,000 rows of drug8cl2 variable in nhamcsed2003 dataset :

        drug class #2 for medication #8 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          3        0.03        0.03
                  antiarrhythmic agents |          1        0.01        0.04
                              diuretics |          1        0.01        0.05
                  coronary vasodilators |          1        0.01        0.06
                      vitamins/minerals |          2        0.02        0.08
                   dermatologics, misc. |          1        0.01        0.09
                     topical analgesics |          1        0.01        0.10
ocular anti-infective/anti-inflammatory |          1        0.01        0.11
       vertigo/motion sickness/vomiting |          1        0.01        0.12
                   analgesics, narcotic |          1        0.01        0.13
                         antiarthritics |          5        0.05        0.18
                                  nsaid |          2        0.02        0.20
                           antipyretics |          4        0.04        0.24
   antitussives/expectorants/mucolytics |          2        0.02        0.26
                         antihistamines |          1        0.01        0.27
                    pharmaceutical aids |          5        0.05        0.32
                                      . |      9,968       99.68      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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