Frequencies for first 10,000 rows of rx4cat3 variable in nhamcsed2012 dataset :

   For RX4, |
MULTUM drug |
category #3 |
     - most |
   detailed |
 level (can |
  be either |
 Level 1,2  |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,945       99.45       99.45
        197 |         21        0.21       99.66
        203 |         19        0.19       99.85
        204 |          5        0.05       99.90
        374 |          1        0.01       99.91
        430 |          1        0.01       99.92
        433 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016