Frequencies for first 10,000 rows of gastro variable in natlterr2000 dataset : Other | gastrointes | tinal | anomalies | Freq. Percent Cum. ------------+----------------------------------- 2 | 9,991 99.91 99.91 9 | 9 0.09 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015