Frequencies for first 10,000 rows of drg2ing5 variable in namcs1995 dataset :

 ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,982       99.82       99.82
      54305 |          1        0.01       99.83
      54465 |          2        0.02       99.85
      54590 |          1        0.01       99.86
      55348 |          1        0.01       99.87
      55520 |          1        0.01       99.88
      55755 |          4        0.04       99.92
      56185 |          5        0.05       99.97
      56193 |          2        0.02       99.99
      56195 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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