Frequencies for first 10,000 rows of rx4v1c3 variable in namcs2014 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,955       99.55       99.55
        040 |          5        0.05       99.60
        057 |         34        0.34       99.94
        105 |          2        0.02       99.96
        113 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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