Great thread......... yes, so many vasriables.
I will add a few;
I wonder how much psychological, and enviromental factors play into SA?
1. A month ago I had an AHI night of 30% of what I usually have; It was the night before a trip out of the country.
2. A traveling compainon also with SA and using a similar CPAP in a seperate dwelling 70 miles distant also had a AHI of close to 35% of his normal ( 4 times my average) on the same exact night before his travel......
If my classes in stastics and probability from years ago serve me right, the likely hood of this being a coincidence is extreemly low.
Perhaps anticipation of a flight/ travel to a different country was a mitigating factor? Did the "stress" of anticipation about this trip affect our respective AHI values........... in a good way?
I wonder if anyone has entered into a computer many of the hundreds of factors that affect SA as noted , also enter in many of the actual outcomes we, (as human guinea pigs) find, and then give stastical data which might give us better direction for the various treatments we receive...........
Insurance companies and most high tech engineering companies do this kind of analysis all the time to make better products and make money.............. We might benifit from similar analysis