Frequencies for first 10,000 rows of aut_rest variable in person dataset : Automatic | Restraint-F | unction | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,094 90.94 90.94 1 | 1 0.01 90.95 2 | 2 0.02 90.97 3 | 1 0.01 90.98 4 | 1 0.01 90.99 9 | 901 9.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016