Frequencies for first 10,000 rows of tobacco variable in namcs2002 dataset : Tobacco | use/exposur | e | Freq. Percent Cum. ------------+----------------------------------- No | 9,776 97.76 97.76 Yes | 224 2.24 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016