Frequencies for first 10,000 rows of drug2cl2 variable in nhamcsed2005 dataset :

          ndc code #2 for medication #2 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |         10        0.10        0.10
          sulfonamides and trimethoprim |          1        0.01        0.11
                  antiarrhythmic agents |          5        0.05        0.16
                     antianginal agents |          1        0.01        0.17
                              diuretics |          2        0.02        0.19
                  coronary vasodilators |          1        0.01        0.20
                          beta blockers |          6        0.06        0.26
           alpha agonist/alpha blockers |          6        0.06        0.32
               antipsychotic/antimanics |          1        0.01        0.33
                         antidiarrheals |          4        0.04        0.37
        antispasmodics/anticholinergics |         10        0.10        0.47
                      vitamins/minerals |          8        0.08        0.55
repl/regs of electrolytes/water balance |          3        0.03        0.58
               blood glucose regulators |          1        0.01        0.59
                          immune serums |          2        0.02        0.61
              antiseptics/disinfectants |          2        0.02        0.63
                   dermatologics, misc. |          8        0.08        0.71
                          acne products |          1        0.01        0.72
                     topical analgesics |         29        0.29        1.01
          skeletal muscle hyperactivity |         27        0.27        1.28
                cycloplegics/mydriatics |          4        0.04        1.32
ocular anti-infective/anti-inflammatory |          4        0.04        1.36
              miscellaneous ophthalmics |         16        0.16        1.52
       vertigo/motion sickness/vomiting |        365        3.65        5.17
                   analgesics, narcotic |         11        0.11        5.28
               analgesics, non-narcotic |          2        0.02        5.30
                         antiarthritics |         62        0.62        5.92
                                  nsaid |         12        0.12        6.04
                           antipyretics |        269        2.69        8.73
                    nasal decongestants |          2        0.02        8.75
   antitussives/expectorants/mucolytics |         28        0.28        9.03
                         antihistamines |         17        0.17        9.20
                          cold remedies |          1        0.01        9.21
        corticosteroid-inhalation/nasal |          1        0.01        9.22
                    pharmaceutical aids |         68        0.68        9.90
                                      . |      9,010       90.10      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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