Frequencies for first 10,000 rows of rx7v2c4 variable in nhamcsed2013 dataset :

   For RX7, |
 level 2 of |
MULTUM drug |
category #4 |
(intermedia |
  te level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
        066 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016