Frequencies for first 10,000 rows of glucose variable in nhamcsed2003 dataset : glucose | Freq. Percent Cum. ------------+----------------------------------- no | 8,556 85.56 85.56 yes | 1,444 14.44 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016