Frequencies for first 10,000 rows of med variable in nhamcsed1992 dataset :

       Were |
medications |
/injections |
ordered/pro |
     vided? |      Freq.     Percent        Cum.
------------+-----------------------------------
        Yes |      6,371       63.71       63.71
         No |      3,629       36.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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