Frequencies for first 10,000 rows of rx2cat3 variable in nhamcsed2010 dataset :

   For RX2, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,816       98.16       98.16
        197 |         84        0.84       99.00
        203 |         77        0.77       99.77
        204 |          1        0.01       99.78
        265 |          1        0.01       99.79
        430 |          9        0.09       99.88
        433 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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