Second pass at: Obstructive sleep apnoea and a hard endpoint in this class — setting out what I have, and where I think it stops being reliable.
Something about Obstructive sleep apnoea does not reconcile and I would like a second pair of eyes before I decide which half is wrong.
Two sources, both reputable, giving figures that cannot both be right unless they are measuring different quantities. My suspicion is that they are, and I cannot see how.