Analysis of reproductive histories of Old Order Amish women reveals no important increase in pregnancy wastage before age 35. This is interpreted to imply that the higher loss rates among women in the early thirties than among those in the early twenties in the general United States population do not result from an age-caused increase in risk to individual women. Rather, it results from the decision of most stillbirth-resistant women to have no pregnancies in their thirties.
Resseguie, Laurence J.
"Pregnancy Wastage and Age of Mother among the Amish,"
4, Article 6.
Available at: https://digitalcommons.wayne.edu/humbiol/vol46/iss4/6