Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsopd2007 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,957       99.57       99.57
        185 |          3        0.03       99.60
        197 |         16        0.16       99.76
        203 |         22        0.22       99.98
        265 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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