Frequencies for first 10,000 rows of ume_primc variable in natlterr2011 dataset : Primary | C-Section | RFP | 732=f_u_pri | mc U | Freq. Percent Cum. ------------+----------------------------------- . | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015