Frequencies for first 10,000 rows of cholest variable in namcs1995 dataset : cholesterol | measure | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,467 94.67 94.67 1 | 533 5.33 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016