Frequencies for first 10,000 rows of rx1v2c3 variable in namcs2009 dataset :

   for rx1, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,922       99.22       99.22
        064 |         32        0.32       99.54
        065 |         25        0.25       99.79
        101 |         14        0.14       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