Frequencies for first 10,000 rows of drg3ing3 variable in namcs2004 dataset :

 ingredient |
code #3 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,959       99.59       99.59
      50745 |          3        0.03       99.62
      53175 |          2        0.02       99.64
      55105 |          3        0.03       99.67
      55130 |          6        0.06       99.73
      55360 |          1        0.01       99.74
      55480 |          1        0.01       99.75
      55905 |          1        0.01       99.76
      56340 |          1        0.01       99.77
      56345 |          2        0.02       99.79
      56585 |          1        0.01       99.80
      70212 |          2        0.02       99.82
      70256 |          1        0.01       99.83
      70259 |          4        0.04       99.87
      70338 |          1        0.01       99.88
      70358 |          4        0.04       99.92
      70407 |          1        0.01       99.93
      70493 |          1        0.01       99.94
      70500 |          1        0.01       99.95
      70582 |          1        0.01       99.96
      70626 |          2        0.02       99.98
      70667 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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