Frequencies for first 10,000 rows of rx8v3c3 variable in nhamcsopd2009 dataset :

   for rx8, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
        185 |          1        0.01       99.84
        197 |          4        0.04       99.88
        203 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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