Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsopd2011 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,971       99.71       99.71
        185 |          3        0.03       99.74
        197 |         14        0.14       99.88
        203 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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