Related Variables

	ahi_a0h3a	Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Measurements/Polysomnography (PSG)
	ahi_c0h3a	Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Measurements/Polysomnography (PSG)
	ahi_o0h3a	Obstructive Apnea-Hypopnea Index (OAHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Measurements/Polysomnography (PSG)