Related Variables

nsrr_rei_ap3n Respiratory Event Index : (Apneas or hypopneas with >= 3% oxygen desaturation) / hour of estimated sleep

Harmonized by the NSRR team.

Data collected with no EEGs. Refer to the source for detailed definition for respiratory events: :slpa54: at Visit 1

Harmonized/Polysomnography/Apnea-Hypopnea Indices
slpa30 Total artifact free periods within the in-bed period from type IV home sleep apnea test Sleep Monitoring/Polysomnography/Sleep Architecture