Frequencies for first 10,000 rows of rx7v3c4 variable in namcs2012 dataset :

   For RX7, |
 level 3 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,987       99.87       99.87
        205 |          8        0.08       99.95
        445 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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