Frequencies for first 10,000 rows of rx2v3c3 variable in nhamcsed2012 dataset :

   For RX2, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,833       98.33       98.33
        185 |          2        0.02       98.35
        197 |         81        0.81       99.16
        203 |         75        0.75       99.91
        204 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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