1. That different women are probably subject to different, but in many cases relatively constant, risks of fetal death does not, however, mean that an individual woman's risk cannot change. Although the magnitude and manner of the increase may be disputed, most workers agree that the risk of fetal death among women who became pregnant towards the end of their reproductive lives is comparatively high. 2 25 26 Moreover, an individual's risk of fetal death can obviously be altered by a past exposure or event, one such event being a prior pregnancy. This pregnancy could in some cases lead to a woman being more likely to have a miscarriage or a stillbirth in a Stevenson;A; Dudgeon, M.; McClure, H.;Ann Hum Genet; Observations on the results of pregnancies in women resident in Belfast,1959
2. Spontaneous abortion risks in man: data from reproductive histories;Warburton, D.; Fraser, F.C.,1964
3. A life table of pregnancy terminations and correlates of fetal loss. Milbank Mem Fund 1962; 40;Shapiro, S.; Jones, E.W.; Densen, P.M.
4. Facts and antifacts in the study of intra-uterine mortality: a reconsideration from pregnancy histories;Leridon, H.;Population Studies,1976
5. Longitudinal studies of pregnancy on the island of Kwai, territory of Hawaii;Yerulshamy, J.; Bierman, J.M.; Kemp, D.H.; Connor, A.; French, F.E.;I. Analysis of previous reproductive history. Am J Obstet Gynecol,1956