Sorry it’s taken me a while to respond. Doing dinner & bedtimes, and spider clearance..
Clymene “The average intelligence quotient (IQ) of children with DS is around 50, ranging between 30 and 70. Remarkably, a small number of patients have a profound degree of ID, whereas others have a mild degree” this is from Mégarbané, A. et al, 2013 The intellectual disability of trisomy 21: Eur J Hum Genet.
Mild learning disability is usually used to describe an IQ of 50-70, moderate is 35-55. IQ measures generally are tricky in this population though, not least due to verbal components of the tests -verbal functioning is commonly affected in DS, but not just as a result of cognitive ability but also hypotonia and differences in facial structure - that basically make talking more difficult.
To pick another example from your account of DS - yes, around 50% of children with DS have congenital heart problems but most can be treated (if needed) within the first years of life - my daughter is in that 50% and though when she was very small, her heart defects affected her ability to feed, they resolved without treatment by the time she was 3. In our local DS group, none of the children have ongoing heart problems and a couple needed surgery in the first year of life, which went well. Of course that’s not true for everyone, but still, that 50% stat is not as scary as it first seems.
To the couple of people picking up on my mentioning the 90% overall abortion rate for pregnancies identifies as high risk for DS - It’s difficult to know the quality of info that people base their decision on. It is a painful and difficult choice to have to make, whatever you decide. The information I was given by the screening team and my doctor was great; balanced and compassionate, and I still went backwards and forwards about what to do. I would not condemn anyone for choosing to terminate in those circumstances. But my experience of being given decent info is (anecdotally, from other parents in the DS community) not common. More than that, most parents were repeatedly asked to consider termination even after they stated they’d made a decision to continue with the pregnancy. So, yes, a lot of parents in the DS community feel that people don’t have access to accurate information. Of course people can do their own research, but it’s an emotional and overwhelming time and not easy to do a deep dive into the research.
If termination rates stayed at 90% even if good quality information was routinely available, I’d be surprised but rest a lot easier than I do now.