To me, forced abortion is the REAL definition of "anti-choice."
Women who would be willing to abort a disabled children would also be more likely to do screenings for defects IMNSHO. My own personal experience is that the pregnancies that lead to severely disabled babies also frequently cause serious complications in the mother, and that might be the main reason why they might choose an early induction, and no treatment beyond comfort care if the baby is born alive.
I have also read, and mentioned elsewhere in this thread, that by many accounts, children with Down Syndrome are almost nonexistent in Iceland, which makes me wonder if the parents really did choose not to have them, or were coerced into it or the babies were not cared for after birth.