Frequencies for first 10,000 rows of cholred variable in nhamcsopd1994 dataset : cholesterol | reduction | couns/educ | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,871 98.71 98.71 1 | 129 1.29 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016