Frequencies for first 10,000 rows of f_tobaco variable in natlterr2013 dataset : Tobacco use | (cig_1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 1,424 14.24 14.24 1 | 8,576 85.76 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015