Name
ahi_c0h4
Label
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Calculation
ahi_c0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + urbp4 + urop4 + unrbp4 + unrop4 + carbp + carop + canbp + canop ) / slpprdp
Units
events per hour
Type
numeric
Tags