Frequencies for first 10,000 rows of rx1v1c4 variable in nhamcsopd2007 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,975       99.75       99.75
        057 |         25        0.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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