Frequencies for first 10,000 rows of rx1cat4 variable in nhamcsed2015 dataset :

   For RX1, |
MULTUM drug |
category #4 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,883       98.83       98.83
        205 |        115        1.15       99.98
        445 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017