Frequencies for first 10,000 rows of rx6v2c3 variable in namcs2011 dataset :

   For RX6, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
        064 |          6        0.06       99.89
        065 |          5        0.05       99.94
        270 |          3        0.03       99.97
        433 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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