Frequencies for first 10,000 rows of drug2cl3 variable in namcs2003 dataset :

ndc code #3 |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,864       98.64       98.64
       0514 |         11        0.11       98.75
       0915 |          1        0.01       98.76
       1275 |          3        0.03       98.79
       1374 |         22        0.22       99.01
       1670 |          4        0.04       99.05
       1728 |         71        0.71       99.76
       1864 |          1        0.01       99.77
       1943 |          1        0.01       99.78
       1944 |         13        0.13       99.91
       1945 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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