Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsed2013 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
        185 |          1        0.01       99.29
        197 |         40        0.40       99.69
        203 |         21        0.21       99.90
        204 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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