Frequencies for first 10,000 rows of rx3cat4 variable in nhamcsopd2010 dataset :

   for rx3, |
multum drug |
category #4 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,972       99.72       99.72
        205 |         26        0.26       99.98
        445 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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