Frequencies for first 10,000 rows of rx4v2c4 variable in nhamcsopd2011 dataset :

   For RX4, |
 level 2 of |
MULTUM drug |
category #4 |
(intermedia |
  te level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
        066 |         14        0.14       99.97
        104 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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