Frequencies for first 10,000 rows of rx1v1c4 variable in nhamcsed2008 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,901       99.01       99.01
        057 |         99        0.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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