Frequencies for first 10,000 rows of ca_gast variable in natlterr2015 dataset : Gastroschis | is Y Yes | Freq. Percent Cum. ------------+----------------------------------- | 1,078 10.78 10.78 N | 8,808 88.08 98.86 U | 114 1.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Oct 2016