Frequencies for first 10,000 rows of spec_use variable in person dataset : Special Use | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,051 90.51 90.51 1 | 1 0.01 90.52 2 | 10 0.10 90.62 3 | 2 0.02 90.64 4 | 3 0.03 90.67 5 | 9 0.09 90.76 9 | 46 0.46 91.22 . | 878 8.78 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Apr 2016