Frequencies for first 10,000 rows of glucose variable in nhamcsed2001 dataset :

    glucose |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,610       86.10       86.10
          1 |      1,390       13.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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