Frequencies for first 10,000 rows of rx2v2c3 variable in namcs2011 dataset :

   For RX2, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
        064 |         21        0.21       99.49
        065 |         28        0.28       99.77
        101 |          8        0.08       99.85
        270 |          4        0.04       99.89
        433 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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