Frequencies for first 10,000 rows of drug2cl3 variable in namcs2002 dataset :

NDC code #3 |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,889       98.89       98.89
       0510 |          1        0.01       98.90
       0514 |          4        0.04       98.94
       1374 |         18        0.18       99.12
       1567 |          2        0.02       99.14
       1568 |          1        0.01       99.15
       1728 |         54        0.54       99.69
       1941 |          1        0.01       99.70
       1943 |          2        0.02       99.72
       1944 |         18        0.18       99.90
       1945 |          2        0.02       99.92
       2095 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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