Frequencies for first 10,000 rows of med variable in nhamcsopd2005 dataset :

   was medication |
       ordered or |
        provided? |      Freq.     Percent        Cum.
------------------+-----------------------------------
               no |      3,138       31.38       31.38
              yes |      6,705       67.05       98.43
entire item blank |        157        1.57      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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