Frequencies for first 10,000 rows of rx6v3c3 variable in namcs2006 dataset :

   for rx6, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,997       99.97       99.97
        180 |          1        0.01       99.98
        197 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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