Frequencies for first 10,000 rows of drg7ing1 variable in nhamcsed2005 dataset :

                             ing. #1 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                       acetaminophen |          9        0.09        0.09
                         amoxicillin |          2        0.02        0.11
                       diphenoxylate |          1        0.01        0.12
                      ergocalciferol |          1        0.01        0.13
              fluticasone propionate |          2        0.02        0.15
                 hydrochlorothiazide |          1        0.01        0.16
                 ipratropium bromide |          2        0.02        0.18
                   iron preparations |          1        0.01        0.19
                          pyridoxine |          1        0.01        0.20
                    sodium phosphate |          1        0.01        0.21
                 polymyxin b sulfate |          1        0.01        0.22
                       memantine hcl |          1        0.01        0.23
                                   . |      9,977       99.77      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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