Frequencies for first 10,000 rows of rx8v2c3 variable in nhamcsopd2009 dataset :

   for rx8, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
        064 |         12        0.12       99.92
        065 |          4        0.04       99.96
        101 |          1        0.01       99.97
        265 |          1        0.01       99.98
        270 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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