Frequencies for first 10,000 rows of med variable in namcs1999 dataset :

       were |
medications |
/injections |
ordered/pro |
      vided |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      3,642       36.42       36.42
        Yes |      6,358       63.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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