Frequencies for first 10,000 rows of rx4cat3 variable in nhamcsed2010 dataset :

   For RX4, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,924       99.24       99.24
        197 |         35        0.35       99.59
        203 |         24        0.24       99.83
        204 |          4        0.04       99.87
        265 |          3        0.03       99.90
        270 |          1        0.01       99.91
        433 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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