Frequencies for first 10,000 rows of rx2v3c3 variable in namcs2012 dataset :

   For RX2, |
 level 3 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,952       99.52       99.52
        185 |          7        0.07       99.59
        197 |         16        0.16       99.75
        203 |         24        0.24       99.99
        204 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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