Frequencies for first 10,000 rows of ume_vag variable in natl2007 dataset : Vaginal RFP | 730=f_u_vag | U | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,725 77.25 77.25 2 | 2,216 22.16 99.41 9 | 59 0.59 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015