Related Variables

oai4p Obstructive Apnea Index : (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events.

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
omai4p Childhood Adenotonsillectomy Trial (CHAT) Obstructive and Mixed Apnea Index (AHI): (Obstructive apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ mixed apneas with >= 4% oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events.

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdim4p Apnea-Hypopnea Index: (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hour of sleep from type I polysomnography

[(total number of apneas and hypopneas associated with >= 3% desaturation) / (hours of sleep)]

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdim4pns Apnea-Hypopnea Index (Non-Supine): (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hour of sleep in non-supine from type I polysomnography

[(total number of apneas and hypopneas in non-supine body position associated with >= 3% desaturation) / (hours of sleep)]. will be missing if no time non-supine or low position sensor quality.

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdimnr4p Apnea-Hypopnea Index (NREM): (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hours of NREM sleep from type I polysomnography

[(total number of apneas and hypopneas in non-rapid eye movement sleep associated with >= 4% desaturation) / (hours of non-rapid eye movement sleep (NREM))]

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices