Frequencies for first 10,000 rows of rx12v1c3 variable in nhamcsed2015 dataset 

  For RX12, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,996       99.96       99.96
        040 |          1        0.01       99.97
        057 |          2        0.02       99.99
        097 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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