Previable means the fetus is not yet developed enough to survive outside the womb. For the purposes of this survey, assume the following questions are for fetuses between 15 and 20 weeks gestation.

Labor induction is when a woman is induced to give birth before she goes into labor naturally. This can be done with medications or specific procedures.

Adverse prenatal diagnosis is the detection of a serious health condition or abnormality in the fetus during pregnancy. Some such situations will mean the fetus will not survive until birth or will not survive long after birth. Other situations will mean the fetus could survive well past birth, but may have challenges specific to different disabilities.

Maternal health emergency means a situation in which the pregnant woman's life or physical health (rather than the fetal life or health) is threatened.