Related Variables
ahi2 | Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices |