Frequencies for first 10,000 rows of llbrflg variable in natl1986 dataset : Date of | Last Live | Birth (by | State) flag | Freq. Percent Cum. ------------+----------------------------------- 0 | 2 0.02 0.02 1 | 9,998 99.98 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016