Frequencies for first 10,000 rows of precare_rec variable in natlterr2005 dataset : Month | Prenatal | Care Began | Recode RFP | 668=f_mpcb | R | Freq. Percent Cum. ------------+----------------------------------- 1 | 2,629 26.29 26.29 2 | 979 9.79 36.08 3 | 97 0.97 37.05 4 | 17 0.17 37.22 5 | 23 0.23 37.45 . | 6,255 62.55 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015