Frequencies for first 10,000 rows of rx3v2c4 variable in namcs2013 dataset :

   For RX3, |
 level 2 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
        066 |          8        0.08       99.99
        104 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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