Frequencies for first 10,000 rows of rx2v2c4 variable in namcs2015 dataset :

   For RX2, |
 level 2 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,978       99.78       99.78
        066 |         19        0.19       99.97
        104 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017