Frequencies for first 10,000 rows of rx1v3c3 variable in nhamcsed2012 dataset :

   For RX1, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,791       97.91       97.91
        197 |        107        1.07       98.98
        203 |         99        0.99       99.97
        204 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016