Frequencies for first 10,000 rows of rx9v1c4 variable in nhamcsed2015 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #4 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,997       99.97       99.97
        057 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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