Name
ahi_o0h4
Label
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Description
Calculated - Summary metric of sleep disordered breathing events.
Calculation
ahi_o0h4 = 60 * (hrembp3 + hrop3 + hnrbp3 + hnrop3 + urbp4 + urop4 + unrbp4 + unrop4 + oarbp + oarop + oanbp + oanop ) / slpprdp
Units
number of events per hour
Type
numeric
Tags