Frequencies for first 10,000 rows of rx6v3c3 variable in nhamcsopd2007 dataset :

   for rx6, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
        197 |          4        0.04       99.92
        203 |          7        0.07       99.99
        265 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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