Frequencies for first 10,000 rows of rx9v1c3 variable in namcs2013 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,989       99.89       99.89
        040 |          1        0.01       99.90
        057 |          7        0.07       99.97
        097 |          1        0.01       99.98
        113 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017