Frequencies for first 10,000 rows of p_cf3 variable in person dataset : Person | Related | Factor 3 | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,947 99.47 99.47 2 | 2 0.02 99.49 3 | 2 0.02 99.51 4 | 7 0.07 99.58 5 | 2 0.02 99.60 28 | 2 0.02 99.62 39 | 2 0.02 99.64 99 | 36 0.36 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Apr 2016