Frequencies for first 10,000 rows of emer_use variable in person dataset : Emergency | Use | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,264 92.64 92.64 1 | 13 0.13 92.77 . | 723 7.23 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016