Frequencies for first 10,000 rows of drug3cl3 variable in namcs2002 dataset :

NDC code #3 |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,927       99.27       99.27
       0514 |          4        0.04       99.31
       1374 |          7        0.07       99.38
       1569 |          1        0.01       99.39
       1728 |         44        0.44       99.83
       1941 |          3        0.03       99.86
       1943 |          2        0.02       99.88
       1944 |         11        0.11       99.99
       2095 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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