Frequencies for first 10,000 rows of mraceimp variable in linkco1991us_num dataset : Race of | Mother | Imputation | Flag | Freq. Percent Cum. ------------+----------------------------------- 1 | 51 0.51 0.51 . | 9,949 99.49 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015