Until someone uses the phrase that "babies born very prematurely should be aborted rather than born because nearly half have severe disabilities." Studies such as this one that are promoted with a glass-is-half-empty slant are often used to advance an agenda. Why start with the negative rather than the positive?
I can remember when I was in my late teen years telling my folks that I felt absolutely guilt-ridden for being a burden on them growing up as a child, and my Mother nearly flattened me on my keister, pointed her finger at me, and told me she never felt a shred of guilt and she said "your father didn't either".