Frequencies for first 10,000 rows of rx5v2c4 variable in namcs2011 dataset :

   For RX5, |
 level 2 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,992       99.92       99.92
        066 |          6        0.06       99.98
        104 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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