Frequencies for first 10,000 rows of dlmp_mm variable in linkpe2009psden dataset : Last Normal | Menses - | Month U;R | Freq. Percent Cum. ------------+----------------------------------- 1 | 267 2.67 2.67 2 | 308 3.08 5.75 3 | 473 4.73 10.48 4 | 2,780 27.80 38.28 5 | 3,326 33.26 71.54 6 | 868 8.68 80.22 7 | 380 3.80 84.02 8 | 301 3.01 87.03 9 | 248 2.48 89.51 10 | 258 2.58 92.09 11 | 281 2.81 94.90 12 | 315 3.15 98.05 99 | 195 1.95 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015