Frequencies for first 10,000 rows of rx3v3c3 variable in namcs2009 dataset :

   for rx3, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,966       99.66       99.66
        185 |          4        0.04       99.70
        197 |          9        0.09       99.79
        203 |         20        0.20       99.99
        287 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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