Frequencies for first 10,000 rows of drg1ing5 variable in namcs2001 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,943       99.43       99.43
      55348 |          1        0.01       99.44
      55755 |          2        0.02       99.46
      56185 |         45        0.45       99.91
      56195 |          1        0.01       99.92
      56265 |          1        0.01       99.93
      56345 |          2        0.02       99.95
      56585 |          2        0.02       99.97
      70120 |          2        0.02       99.99
      70147 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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