Frequencies for first 10,000 rows of drug8cl2 variable in namcs2003 dataset :

ndc code #2 |
        for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,966       99.66       99.66
       0120 |          1        0.01       99.67
       0503 |          1        0.01       99.68
       0507 |          1        0.01       99.69
       0510 |          1        0.01       99.70
       0512 |          2        0.02       99.72
       0513 |          1        0.01       99.73
       0877 |          1        0.01       99.74
       0913 |          2        0.02       99.76
       0916 |          1        0.01       99.77
       1034 |          1        0.01       99.78
       1265 |          1        0.01       99.79
       1480 |          1        0.01       99.80
       1723 |          2        0.02       99.82
       1724 |          8        0.08       99.90
       1727 |          4        0.04       99.94
       1728 |          1        0.01       99.95
       1943 |          4        0.04       99.99
       2087 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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