Frequencies for first 10,000 rows of drug5cl2 variable in nhamcsed2005 dataset :

          ndc code #2 for medication #5 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                        medicinal gases |          1        0.01        0.01
          sulfonamides and trimethoprim |          1        0.01        0.02
                  antiarrhythmic agents |          3        0.03        0.05
                antihypertensive agents |          1        0.01        0.06
                  coronary vasodilators |          1        0.01        0.07
                          beta blockers |          2        0.02        0.09
           alpha agonist/alpha blockers |          1        0.01        0.10
repl/regs of electrolytes/water balance |          1        0.01        0.11
                     topical analgesics |          1        0.01        0.12
          skeletal muscle hyperactivity |          1        0.01        0.13
                cycloplegics/mydriatics |          1        0.01        0.14
ocular anti-infective/anti-inflammatory |          1        0.01        0.15
              miscellaneous ophthalmics |          3        0.03        0.18
       vertigo/motion sickness/vomiting |         32        0.32        0.50
                   analgesics, narcotic |          5        0.05        0.55
                         antiarthritics |         13        0.13        0.68
                                  nsaid |          3        0.03        0.71
                           antipyretics |         22        0.22        0.93
   antitussives/expectorants/mucolytics |          2        0.02        0.95
                    pharmaceutical aids |         21        0.21        1.16
                                      . |      9,884       98.84      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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