Frequencies for first 10,000 rows of rx4v2c3 variable in nhamcsed2007 dataset :

   for rx4, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,954       99.54       99.54
        064 |         25        0.25       99.79
        065 |         19        0.19       99.98
        113 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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