Frequencies for first 10,000 rows of drg2ing5 variable in namcs2005 dataset :

 ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,978       99.78       99.78
      55348 |          1        0.01       99.79
      55755 |          1        0.01       99.80
      56185 |          9        0.09       99.89
      56195 |          1        0.01       99.90
      56238 |          1        0.01       99.91
      70275 |          1        0.01       99.92
      70362 |          3        0.03       99.95
      70530 |          1        0.01       99.96
      70709 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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