ahi_ap0nhp5x3n_f1t3 - Search - Sleep Data - National Sleep Research Resource

Apnea-Hypopnea Index : (Apneas and hypopneas with >= 3% oxygen desaturation) / hour of sleep

nsrr_ahi_hp3u under Harmonized/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables

Harmonized by the NSRR team.Data collected with no EEGs. Refer to the source for detailed definition for respiratory events: :ahi_screening: at Baseline

Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and >= 3% oxygen desaturation) / hours of estimated sleep from type III home sleep apnea test

ahi_screening under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables

Calculated - Summary metric of sleep disordered breathing events from the baseline screening visit.Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)There is a HeartBEAT specific respiratory event index measure :aphypi:. Details can be found in the Embletta scoring manual.