Frequencies for first 10,000 rows of compgst_imp variable in natl2015 dataset : Combined | Gestation | Imputation | Flag Blank | Combined | Gestation | is not i | Freq. Percent Cum. ------------+----------------------------------- 1 | 72 0.72 0.72 . | 9,928 99.28 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Oct 2016