Frequencies for first 10,000 rows of urf_eclam variable in natl2006 dataset : Eclampsia | RFP | 690=f_urf_e | clamp U;R | Freq. Percent Cum. ------------+----------------------------------- 1 | 25 0.25 0.25 2 | 9,831 98.31 98.56 9 | 144 1.44 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015