Frequencies for first 10,000 rows of rx3cat3 variable in nhamcsopd2009 dataset :

   for rx3, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,940       99.40       99.40
        185 |          7        0.07       99.47
        197 |         19        0.19       99.66
        203 |         28        0.28       99.94
        265 |          1        0.01       99.95
        270 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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