Frequencies for first 10,000 rows of rx4cat3 variable in namcs2008 dataset :

   for rx4, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,981       99.81       99.81
        185 |          3        0.03       99.84
        197 |          4        0.04       99.88
        203 |          9        0.09       99.97
        270 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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