Frequencies for first 10,000 rows of rx2v3c3 variable in namcs2009 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,947       99.47       99.47
        185 |          4        0.04       99.51
        197 |         17        0.17       99.68
        203 |         30        0.30       99.98
        204 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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