Frequencies for first 10,000 rows of rx9v1c3 variable in namcs2015 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,982       99.82       99.82
        040 |          3        0.03       99.85
        057 |         10        0.10       99.95
        105 |          4        0.04       99.99
        113 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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