Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsed2010 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,937       99.37       99.37
        197 |         35        0.35       99.72
        203 |         24        0.24       99.96
        204 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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