Frequencies for first 10,000 rows of rx2v3c3 variable in nhamcsopd2011 dataset :

   For RX2, |
 level 3 of |
MULTUM drug |
category #3 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,911       99.11       99.11
        185 |          6        0.06       99.17
        197 |         25        0.25       99.42
        203 |         57        0.57       99.99
        204 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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