Frequencies for first 10,000 rows of rx4cat3 variable in nhamcsopd2009 dataset :

   for rx4, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,958       99.58       99.58
        185 |         10        0.10       99.68
        197 |         10        0.10       99.78
        203 |         17        0.17       99.95
        265 |          2        0.02       99.97
        270 |          1        0.01       99.98
        430 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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