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Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
nsrr_ahi_hp3u
under Harmonized/Polysomnography/Apnea-Hypopnea Indices in
CHAT variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h3:
Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
ahi_a0h3
under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in
CHAT variables
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