Related Variables
| ahi_a0h4a | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
| ahi_c0h4a | Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
| ahi_o0h4a | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour 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 |