Frequencies for first 10,000 rows of p_sf2 variable in person dataset : related | factors (2) | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,985 99.85 99.85 60 | 1 0.01 99.86 99 | 14 0.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016