Frequencies for first 10,000 rows of rx5v3c3 variable in nhamcsopd2009 dataset :

   for rx5, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
        185 |          3        0.03       99.83
        197 |          6        0.06       99.89
        203 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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