Frequencies for first 10,000 rows of rx7v1c3 variable in namcs2009 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
        057 |          8        0.08       99.96
        097 |          2        0.02       99.98
        105 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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