Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsed2015 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,924       99.24       99.24
        197 |         40        0.40       99.64
        203 |         27        0.27       99.91
        204 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017