Frequencies for first 10,000 rows of f_wtgain variable in natlterr2005 dataset : Weight gain | U;R | Freq. Percent Cum. ------------+----------------------------------- 0 | 3,076 30.76 30.76 1 | 6,924 69.24 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015