Frequencies for first 10,000 rows of rx2v1c3 variable in namcs2009 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,938       99.38       99.38
        057 |         49        0.49       99.87
        097 |          4        0.04       99.91
        105 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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