Posted by often_awake on September 12, 2012 at 01:14:39:

In Reply to: Re: Questioning AHI posted by westernjoe on September 01, 2012 at 09:28:59:

Good points.

The percentage of time in the various sleep stages is pretty vital. Lowest o2 is important, as is something like average o2 or percentage of time spent below a certain threshold--I've seen people use 85%.

I also like the analogy with cholesterol. What's interesting is that after 50 years, there's *still* no definitive answer to what the important cholesterol numbers are. (Is it a subset of LDL or HDL? Is it ApoB ? People don't agree.)

The one number that I think actually is pretty meaningless is the AHI. Divide it into apnea index and something else.

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