Frequencies for first 10,000 rows of rx9v1c3 variable in nhamcsed2014 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
        040 |          3        0.03       99.89
        057 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017