[calfuris]

From what I remember an apnea/hypopnia index of up to 5 is considered normal, 5-15 is mild, 15-30 is medium, and 30+ is severe. That's what I learned when I had severe sleep apnea, but it spontaneously resolved years ago so perhaps definitions have shifted. I'd be pretty shocked if 50 were "mild" now, though.

I had an AHI of ~90 at diagnosis, and I couldn't figure out why I was so damn tired all the time. My sleep was very badly disrupted, but since an apnea doesn't typically bring you all the way awake it can be hard to notice.

[calfuris]

Outside the edit window: I just realized that I missed the mention of the timescale. The apnea/hypopnea index is measured in terms of events per hour, and my doctors never discussed it in any other terms, so I automatically interpreted those numbers as per hour.