Frequencies for first 10,000 rows of rx2cat4 variable in nhamcsed2007 dataset :

   for rx2, |
multum drug |
category #4 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,895       98.95       98.95
        205 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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