Frequencies for first 10,000 rows of rx4cat3 variable in nhamcsed2011 dataset :

   For RX4, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,939       99.39       99.39
        197 |         36        0.36       99.75
        203 |         15        0.15       99.90
        204 |          1        0.01       99.91
        265 |          1        0.01       99.92
        430 |          3        0.03       99.95
        433 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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