Frequencies for first 10,000 rows of rx8cat3 variable in nhamcsed2009 dataset :

   for rx8, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,993       99.93       99.93
        197 |          2        0.02       99.95
        203 |          3        0.03       99.98
        204 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016