Frequencies for first 10,000 rows of rx3v3c3 variable in nhamcsopd2007 dataset :

   for rx3, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,958       99.58       99.58
        185 |          3        0.03       99.61
        197 |         20        0.20       99.81
        203 |         17        0.17       99.98
        204 |          1        0.01       99.99
        265 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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