Frequencies for first 10,000 rows of rx1v3c3 variable in nhamcsopd2010 dataset :

   for rx1, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,897       98.97       98.97
        185 |         44        0.44       99.41
        197 |         28        0.28       99.69
        203 |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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