Frequencies for first 10,000 rows of rx2cat4 variable in namcs2008 dataset :

   for rx2, |
multum drug |
category #4 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,982       99.82       99.82
        205 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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