Related Variables

cai4p Central Apnea Index : (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

[(Total number of central apneas associated with >= 4% desaturations) / (hours of sleep)]

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
rdimrem4p Apnea-Hypopnea Index (REM): (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 REM sleep from type I polysomnography

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

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices