Frequencies for first 10,000 rows of drg1ing5 variable in namcs1995 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,957       99.57       99.57
      55180 |          1        0.01       99.58
      55348 |          1        0.01       99.59
      55485 |          1        0.01       99.60
      55755 |          2        0.02       99.62
      56185 |         25        0.25       99.87
      56195 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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