Frequencies for first 10,000 rows of med variable in nhamcsopd2004 dataset :

       were |
medications |
/injections |
ordered/pro |
     vided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      3,520       35.20       35.20
        yes |      6,480       64.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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