Frequencies for first 10,000 rows of emer_use variable in person dataset : Emergency | Use | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,140 91.40 91.40 1 | 8 0.08 91.48 . | 852 8.52 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016