Assertion: fetal aneuploidy | /r/CapableOf | decline before age
Facets:
value: steadily
type: MANNER
Source sentences:
text: He said, "a few recent studies have shown that embryo aneuploidy (chromosome abnormality preventing embryo implantation or causing miscarriage) changes with age in a u-shaped curvilinear regression, declining steadily before age 30 and increasing steadily thereafter.