Frequencies for first 10,000 rows of rx2cat4 variable in namcs2010 dataset :

   for rx2, |
multum drug |
category #4 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,968       99.68       99.68
        205 |         29        0.29       99.97
        445 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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