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[Diagnosis] Number of AHI shown in report
Number of AHI shown in report
My report shows AHI the like of  2.5,  3.5.,  1.5.,  5.5
Can anyone please explain how one can have an AHI which is not a whole number?
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RE: Number of AHI shown in report
G'day boomerang. Welcome to Apnea Board.

The AHI (and the other indices AI, CAI, HI) are all averages - take the total number of events, divided by the number of hours of sleep. So if you had 125 events over 7 hours the AHI would be 125 / 7 = 17.86

I may be telling you something you already know, but the main indices used are:

- AI: Apnea Index
- HI: Hypopnea index
- AHI: Apnea / hypopnea index (= AI + HI)
- CAI: Central apnea index.
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