Frequencies for first 10,000 rows of drg3ing5 variable in nhamcsopd2004 dataset :

  ingredient code #5 for medication |
                                 #3 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                            sucrose |          1        0.01        0.01
                          vitamin a |         23        0.23        0.24
                       vitamin b-12 |          1        0.01        0.25
                   atropine sulfate |          1        0.01        0.26
                            guarana |          1        0.01        0.27
                  phenylephrine hcl |          2        0.02        0.29
                   neomycin sulfate |          1        0.01        0.30
                          pertactin |          1        0.01        0.31
                                  . |      9,969       99.69      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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