Frequencies for first 10,000 rows of rx1v1c4 variable in namcs2015 dataset :

   For RX1, |
 level 1 of |
MULTUM drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,976       99.76       99.76
        057 |         20        0.20       99.96
        254 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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