Frequencies for first 10,000 rows of rx3cat4 variable in namcs2011 dataset :

   For RX3, |
MULTUM drug |
category #4 |
     - most |
   detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,979       99.79       99.79
        205 |         16        0.16       99.95
        445 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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