Frequencies for first 10,000 rows of rx4v1c4 variable in namcs2007 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,995       99.95       99.95
        057 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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