AHI vs RDI

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[-] Winda NG +0 points · over 1 year ago

Hello all

I look at the formula for RDI at all oxygen desaturations, which is (60 * ( hrembp + hrop + hnrbp + hnrop + carbp + carop + canbp + canop + oarbp + oarop + oanbp + oanop ) / slpprdp)

It looks like AHI at all oxygen desaturations to me? If not, what's the difference, and how do I then calculate AHI at all oxygen desaturations?

Many thanks Winda

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[-] mrueschman +0 points · over 1 year ago

Winda,

rdi0p (with that formula) represents the AHI included events at all oxygen desaturations. From what I understand, at the time these data were originally scored/created (late 1990s), the AHI/RDI terms were essentially interchangeable and did not (yet) include the RERA distinction. "rdi*" variables have carried through into many of our other datasets, though these more closely match an AHI because we don't typically score RERAs.

Thanks,

Mike

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[-] Winda NG +0 points · over 1 year ago

That is a very clear explanation. Thanks Mike!

Best Winda

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