Frequencies for first 10,000 rows of rx7cat3 variable in nhamcsed2011 dataset :

   For RX7, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
        197 |          4        0.04       99.92
        203 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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