Frequencies for first 10,000 rows of rx3v1c3 variable in nhamcsopd2008 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,931       99.31       99.31
        057 |         59        0.59       99.90
        097 |          3        0.03       99.93
        105 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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