Frequencies for first 10,000 rows of drug8cl2 variable in namcs2005 dataset :

ndc code #2 |
        for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,955       99.55       99.55
       0503 |          1        0.01       99.56
       0506 |          3        0.03       99.59
       0507 |          4        0.04       99.63
       0512 |          5        0.05       99.68
       0513 |          2        0.02       99.70
       0877 |          1        0.01       99.71
       0913 |          1        0.01       99.72
       1671 |          2        0.02       99.74
       1724 |         13        0.13       99.87
       1727 |          3        0.03       99.90
       1728 |          2        0.02       99.92
       1860 |          1        0.01       99.93
       1943 |          1        0.01       99.94
       1944 |          1        0.01       99.95
       1947 |          2        0.02       99.97
       2100 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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