Frequencies for first 10,000 rows of drug3cl2 variable in nhamcsed2005 dataset :

          ndc code #2 for medication #3 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          5        0.05        0.05
          sulfonamides and trimethoprim |          2        0.02        0.07
                  antiarrhythmic agents |          3        0.03        0.10
                              diuretics |          3        0.03        0.13
                  coronary vasodilators |          2        0.02        0.15
                          beta blockers |          3        0.03        0.18
           alpha agonist/alpha blockers |          2        0.02        0.20
                 disorders, acid/peptic |          5        0.05        0.25
                         antidiarrheals |          1        0.01        0.26
        miscellaneous gastrointestinals |          2        0.02        0.28
        antispasmodics/anticholinergics |          3        0.03        0.31
                      vitamins/minerals |          1        0.01        0.32
               blood glucose regulators |          1        0.01        0.33
              antiseptics/disinfectants |          1        0.01        0.34
                   dermatologics, misc. |          2        0.02        0.36
                          acne products |          1        0.01        0.37
                     topical analgesics |         18        0.18        0.55
          skeletal muscle hyperactivity |          8        0.08        0.63
                cycloplegics/mydriatics |          3        0.03        0.66
ocular anti-infective/anti-inflammatory |          4        0.04        0.70
              miscellaneous ophthalmics |          7        0.07        0.77
       vertigo/motion sickness/vomiting |        119        1.19        1.96
                   analgesics, narcotic |          4        0.04        2.00
               analgesics, non-narcotic |          3        0.03        2.03
                         antiarthritics |         35        0.35        2.38
                                  nsaid |          6        0.06        2.44
                           antipyretics |         94        0.94        3.38
                         antiprotozoals |          1        0.01        3.39
                    nasal decongestants |          1        0.01        3.40
   antitussives/expectorants/mucolytics |         12        0.12        3.52
                         antihistamines |         16        0.16        3.68
                          cold remedies |          1        0.01        3.69
        corticosteroid-inhalation/nasal |          1        0.01        3.70
                    pharmaceutical aids |         62        0.62        4.32
                                      . |      9,568       95.68      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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