Frequencies for first 10,000 rows of rx2v3c3 variable in namcs2011 dataset :

   For RX2, |
 level 3 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,943       99.43       99.43
        185 |          8        0.08       99.51
        197 |         28        0.28       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