DR JohnG, I started using the mask in mid-December, and am 100% compliant. I have had some days in which I felt totally energetic, and a couple of whole weeks where I felt great, but these last two weeks have been right back to feeling like I did prior to the treatment.
I understand that this is not abnormal, but after feeling really well, I am not liking the feeling really icky again.
The biggest improvement was when I switched from a nasal mask to the nasal pillows, although that may or may not have had anything to do with the effectiveness...but it certainly helped the comfort of trying to sleep with a big gadget attached to my face