Frequencies for first 10,000 rows of rx9v3c2 variable in nhamcsed2013 dataset :

   For RX9, |
 level 3 of |
MULTUM drug |
category #2 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,992       99.92       99.92
        196 |          1        0.01       99.93
        211 |          2        0.02       99.95
        385 |          4        0.04       99.99
        388 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016