Frequencies for first 10,000 rows of rx18v1c2 variable in nhamcsed2014 dataset :

  For RX18, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,997       99.97       99.97
        040 |          1        0.01       99.98
        097 |          1        0.01       99.99
        122 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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