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Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
ahi_ap0uhp3x4r_f1t1
under Sleep Monitoring/Polysomnography in
ABC variables
Calculated - Summary metric of sleep disordered breathing events.
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r
under Harmonized/Polysomnography/Apnea-Hypopnea Indices in
ABC variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_ap0uhp3x4r_f1t1:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r
under Harmonized/Polysomnography/Apnea-Hypopnea Indices in
CFS variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a: at Visit 5
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r
under Harmonized/Polysomnography/Apnea-Hypopnea Indices in
CCSHS variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a: at Visit 3
Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
ahi_a0h4a
under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in
CFS variables
Calculated - Summary metric of sleep disordered breathing events.
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
ahi_a0h4a
under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in
CCSHS variables
Calculated - Summary metric of sleep disordered breathing events.
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