Frequencies for first 10,000 rows of rx1v3c3 variable in namcs2007 dataset :

   for rx1, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,934       99.34       99.34
        185 |         13        0.13       99.47
        197 |         32        0.32       99.79
        203 |         20        0.20       99.99
        204 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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