Frequencies for first 10,000 rows of rx4v2c3 variable in namcs2011 dataset :

   For RX4, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,969       99.69       99.69
        064 |         13        0.13       99.82
        065 |          8        0.08       99.90
        101 |          4        0.04       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