Related Variables
nsrr_ahi_hp4r |
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a: |
Harmonized/Polysomnography/Apnea-Hypopnea Indices |