Frequencies for first 10,000 rows of glucose variable in namcs2015 dataset :

   Glucose, |
      serum |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,801       98.01       98.01
          1 |        199        1.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017