Frequencies for first 10,000 rows of rx1v3c3 variable in nhamcsopd2011 dataset :

   For RX1, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,908       99.08       99.08
        185 |         36        0.36       99.44
        197 |         13        0.13       99.57
        203 |         41        0.41       99.98
        440 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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