Related Variables

	oai4pa	Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Measurements/Polysomnography/Respiratory Events/Indexes
	rdi4pa	Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation or arousal	Measurements/Polysomnography/Respiratory Events/Indexes