Frequencies for first 10,000 rows of drug6cl2 variable in namcs2003 dataset :

ndc code #2 |
        for |
 medication |
         #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,926       99.26       99.26
       0120 |          2        0.02       99.28
       0503 |          1        0.01       99.29
       0507 |          4        0.04       99.33
       0508 |          1        0.01       99.34
       0512 |          6        0.06       99.40
       0513 |          4        0.04       99.44
       0514 |          1        0.01       99.45
       0874 |          2        0.02       99.47
       0876 |          1        0.01       99.48
       0913 |          3        0.03       99.51
       1036 |          1        0.01       99.52
       1183 |          1        0.01       99.53
       1373 |          1        0.01       99.54
       1671 |          2        0.02       99.56
       1722 |          1        0.01       99.57
       1724 |         30        0.30       99.87
       1727 |          7        0.07       99.94
       1728 |          2        0.02       99.96
       1943 |          2        0.02       99.98
       1947 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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