Related Variables

	nsrr_ahi_chicago1999	Apnea-Hypopnea Index: (All apneas + hypopneas with >50% flow reduction or discernible flow reduction with >=3% desat or arousal) / hour of sleep Harmonized by the NSRR team. The definition of hypopnea events is consistent with the following clinical guidelines: American Academy of Sleep Medicine (AASM) Chicago 1999 standard. Sleep 1999 (PubMed ID:10450601) Search for all AHI variables consistent with the same clinical guidelines within this dataset Refer to the source for detailed definition for respiratory events: :rditstpsg:	Harmonized/Polysomnography/Apnea-Hypopnea Indices

Apnea Positive Pressure Long-term Efficacy Study