Related Variables

oai4pa Obstructive apnea index >=4% or arousal

[(total number of obstructive apneas with >= 4% desaturation or arousal) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omai4pa Obstructive/mixed apnea index >=4% or arousal

[(total number of obstructive apneas with >= 4% desaturation or arousal + total number of mixed apneas with >= 4% desaturation or arousal) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim4pa Overall Respiratory Disturbance Index (RDI) at >=4% desaturation or arousal

[(total number of apneas and hypopneas with >= 4% desaturation or arousal) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes