Frequencies for first 10,000 rows of rx3v2c4 variable in namcs2012 dataset :

   For RX3, |
 level 2 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,981       99.81       99.81
        066 |         14        0.14       99.95
        104 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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