Frequencies for first 10,000 rows of glucose variable in nhamcsed2005 dataset :

    glucose |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      7,754       77.54       77.54
        yes |      2,246       22.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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