Frequencies for first 10,000 rows of rx3v1c3 variable in nhamcsed2007 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,884       98.84       98.84
        057 |        112        1.12       99.96
        097 |          1        0.01       99.97
        105 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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