Frequencies for first 10,000 rows of rx4v3c3 variable in namcs2013 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,978       99.78       99.78
        185 |          1        0.01       99.79
        197 |          8        0.08       99.87
        203 |         12        0.12       99.99
        204 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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