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. Author manuscript; available in PMC: 2023 Dec 1.
Published in final edited form as: Curr Protoc. 2022 Dec;2(12):e633. doi: 10.1002/cpz1.633

Table 1.

Approximate Miscarriage Risk by Maternal Age (Adapted with permission from Figure 2 of Magnus et al., 2019)

Maternal age (years) Miscarriage risk (%)
Younger than 35 12 (Background risk)
35 14
36 15
37 17
38 19
39 22
40 27
41 31
42 35
43 39
44 46
45 and older 57