Frequencies for first 10,000 rows of drg8ing1 variable in nhamcsed2005 dataset :

                             ing. #1 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                       acetaminophen |          5        0.05        0.05
                         amoxicillin |          1        0.01        0.06
                           carbidopa |          1        0.01        0.07
                 hydrochlorothiazide |          1        0.01        0.08
               multivitamins general |          1        0.01        0.09
                    sulbactin sodium |          1        0.01        0.10
                                   . |      9,990       99.90      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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