I was diagnosed with severe sleep apnia.  Twice, they had me wired in a sleep study.  Nose piece, cpap, bipap, chin strap nothing worked for me.  I just could not tolerate their paraphernalia.  But, alas, when I sleep on my side, I get a restfull night.  No snoring, no stopping brathing.   My question is , why don't they include in their study  side positions????

Usually they do?  I have many more events when sleeping on my sides than when I'm on my back (and wouldn't you know it, I'm mostly a side sleeper!).  Higher events when on one's side is in the minority, but it's still fairly common.  I would expect the lab to check this as well as supine (back) position.

You wrote that you didn't tolerate all the 'stuff', so I assume you also did not sleep very much at your studies?  That could be why they didn't fuss over changing your position.  

How do you know that you do not have sleep apnea events when on your sides?  If you didn't sleep much on your sides at the diagnostic study then there is not a good way to know this.  A partner (or one's own obversations) can often confirm the existence of events, but observation and perception are not reliable measures of the absence of events.  It generally requires either a sleep study or possibly a full-data-recording CPAP machine, to determine what is happening when you're on your sides.

Blessings,
--pseudonym