Frequencies for first 10,000 rows of med variable in nhamcsopd2006 dataset :

   was medication |
       ordered or |
        provided? |      Freq.     Percent        Cum.
------------------+-----------------------------------
               No |      2,988       29.88       29.88
              Yes |      6,677       66.77       96.65
Entire item blank |        335        3.35      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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