Frequencies for first 10,000 rows of drug5cl3 variable in namcs2004 dataset :

ndc code #3 |
        for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,951       99.51       99.51
       0510 |          1        0.01       99.52
       0514 |          2        0.02       99.54
       1268 |          1        0.01       99.55
       1374 |          4        0.04       99.59
       1728 |         39        0.39       99.98
       1864 |          1        0.01       99.99
       1944 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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