Frequencies for first 10,000 rows of f_ca_cleftlp variable in natlterr2011 dataset : Cleft Lip | w/ or w/o | Cleft | Palate | (ca_cleft) | R | Freq. Percent Cum. ------------+----------------------------------- 0 | 5,590 55.90 55.90 1 | 4,410 44.10 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015