Related Variables
ahi_a0h4 | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
ahi_c0h4 | Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
ahi_o0h4 | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
oahi4 |
Obstructive apnea hypopnea (>=4% desaturation) index
{[(total number of obstructive apneas) + (total number of hypopneas associated with >= 4% desaturation)] / (hours of sleep)} |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdim4p |
Overall Respiratory Disturbance Index (RDI) at >=4% desaturation
[(total number of apneas and hypopneas associated with >= 4% desaturation) / (hours of sleep)] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdim4ps |
Overall supine Respiratory Disturbance Index (RDI) at >=4% desaturation
[(total number of apneas and hypopneas in supine body position associated with >= 4% desaturation) / (hours of sleep)] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdimnr4p |
Overall non-rapid eye movement sleep (NREM) Respiratory Disturbance Index (RDI) at >=4% desaturation
[(total number of apneas and hypopneas in non-rapid eye movement sleep associated with >= 4% desaturation) / (hours of non-rapid eye movement sleep (NREM))] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes |