Frequencies for first 10,000 rows of aut_rest variable in person dataset : Automatic | Restraint-F | unction | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,843 98.43 98.43 1 | 2 0.02 98.45 9 | 155 1.55 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016