Frequencies for first 10,000 rows of rx7v3c3 variable in namcs2012 dataset :

   For RX7, |
 level 3 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,985       99.85       99.85
        185 |          1        0.01       99.86
        197 |          8        0.08       99.94
        203 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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