Frequencies for first 10,000 rows of rx4cat3 variable in nhamcsed2015 dataset :

   For RX4, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,909       99.09       99.09
        197 |         40        0.40       99.49
        203 |         27        0.27       99.76
        204 |          9        0.09       99.85
        265 |          3        0.03       99.88
        430 |          3        0.03       99.91
        433 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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