Frequencies for first 10,000 rows of rx2v1c3 variable in namcs2013 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,930       99.30       99.30
        040 |         10        0.10       99.40
        057 |         48        0.48       99.88
        097 |          5        0.05       99.93
        105 |          3        0.03       99.96
        113 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017