Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsopd2010 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,968       99.68       99.68
        185 |          3        0.03       99.71
        197 |         10        0.10       99.81
        203 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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