Frequencies for first 10,000 rows of glucose variable in nhamcsed2014 dataset :

    Glucose |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,068       80.68       80.68
        Yes |      1,932       19.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017