Frequencies for first 10,000 rows of rx3v3c4 variable in namcs2009 dataset :

   for rx3, |
 level 3 of |
multum drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
        205 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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