Frequencies for first 10,000 rows of rx6v1c3 variable in namcs2011 dataset :

   For RX6, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
        040 |          3        0.03       99.86
        057 |         11        0.11       99.97
        105 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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