Editing Miscarriage (section)

=== Age ===
Miscarriage is least common for mothers in their twenties, for whom around 12% of known pregnancies end in miscarriage.<ref name=Quenby2021/> Risk rises with age: around 14% for women aged 30–34; 18% for those 35–39; 37% for those 40–44; and 65% for those over 45.<ref name=Quenby2021/><!--Supp. Table 2--> Women younger than 20 have slightly increased miscarriage risk, with around 16% of known pregnancies ending in miscarriage.<ref name=Quenby2021/><!--Supp. Table 2-->

Miscarriage risk also [[Paternal age effect|rises with paternal age]], although the effect is less pronounced than for maternal age. The risk is lowest for men under 40 years old. For men aged 40-44, the risk is around 23% higher. For men over 45, the risk is 43% higher.<ref>{{cite journal |vauthors=Muncey W, Scott M, Lathi RB, Eisenberg ML |title=The paternal role in pregnancy loss |journal=Andrology |volume= |issue= |pages= |date=February 2024 |pmid=38334037 |doi=10.1111/andr.13603 |url=}}</ref>