Frequencies for first 10,000 rows of rx2v3c4 variable in nhamcsed2015 dataset :

   For RX2, |
 level 3 of |
MULTUM drug |
category #4 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,916       99.16       99.16
        205 |         84        0.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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