Frequencies for first 10,000 rows of emer_use variable in person dataset : Emergency | Use | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,245 92.45 92.45 1 | 9 0.09 92.54 . | 746 7.46 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016