Frequencies for first 10,000 rows of rx5v1c3 variable in namcs2007 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,974       99.74       99.74
        057 |         20        0.20       99.94
        097 |          2        0.02       99.96
        105 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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