Frequencies for first 10,000 rows of rx1cat3 variable in namcs2009 dataset :

   for rx1, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,922       99.22       99.22
        185 |         14        0.14       99.36
        197 |         25        0.25       99.61
        203 |         30        0.30       99.91
        204 |          2        0.02       99.93
        270 |          6        0.06       99.99
        430 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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