Frequencies for first 10,000 rows of glucose variable in nhamcsed2011 dataset : Glucose | Freq. Percent Cum. ------------+----------------------------------- No | 7,147 71.47 71.47 Yes | 2,853 28.53 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016