Frequencies for first 10,000 rows of glucose variable in namcs2009 dataset :

    glucose |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,108       91.08       91.08
        yes |        892        8.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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